Stud Bolts

MSTAR ENTERPRISES is one of the most recognized Manufacturer & Exporter of High Tensile Stud Bolts Fasteners in India.The raw materials used have been tested and then used to confirm the robust and sturdy character of this product.

Specification of Stud Bolts

Coating

• Electro Galvanized
• Hot Dip Galvanized
• Black
• Dracomet
• Zinc Plated
• PTFE
• Yellow
• TIN
• Client Specific Requirements

Specifications for Fasteners

MSTAR ENTERPRISES is a Dominant and Expert manufacturer of high-quality bolts, Hub bolts, U-bolts, Hex bolts, spring bolts, Shackle bolts, Nuts, Long bolts and Stud bolts.We likewise fabricate these items as per client’s Requirement and Specification.

Threaded Bars, threaded bars manufacturers, threaded bars exporters, threaded bars suppliers at best price in india

MSTAR ENTERPRISES is one of the most recognized Manufacturer & Exporter of High Tensile Threaded Bars Fasteners in India.The raw materials used have been tested and then used to confirm the robust and sturdy character of this product.

Specification of Threaded Bars

Coating

• Electro Galvanized
• Hot Dip Galvanized
• Black
• Dracomet
• Zinc Plated
• PTFE
• Yellow
• TIN
• Client Specific Requirements

Types of threaded bars

Threaded bars is most commonly supplied with a right-hand thread (where a clockwise rotation will tighten). Left-hand threaded bar is also available for situations where vibration might cause a right-hand thread to loosen. We can also supply threaded rod with threads at the ends only, or with left/right threads at opposite ends, for specific applications.

Types of Threads

Following are the 13 different types of threads:

1. Right-hand threades
2. Left-hand threads
3. taper threads
4. “V” shape threads
5. Metric or International Threads
6. British Standard Threads
7. Seller Threads
8. Square Threads
9. Acme Threads
10. buttress Threads
11. Knuckle Threads
12. Worm Threads
13. Single and Multi-Threads

Specifications for Fasteners

MSTAR ENTERPRISES is a Dominant and Expert manufacturer of threaded bars, high-quality bolts, Hub bolts, U-bolts, Hex bolts, spring bolts, Shackle bolts, Nuts, Long bolts and Stud bolts.We likewise fabricate these items as per client’s Requirement and Specification.

Washers, plain washers at best price, round washers suppliers, flat washers manufacturers and suppliers in india

MSTAR ENTERPRISES is one of the most recognized Manufacturer & Exporter of High Tensile Washers in India.The raw materials used have been tested and then used to confirm the robust and sturdy character of this product.

Specifications of Washers

Standard	ASTM / ASME / BS / DIN / JIS / BS EN ISO / IS
Material	Carbon Steel Washers, Mild Steel Washers, Alloy Steel Washers, Stainless Steel Washers, Duplex Washers, Super Duplex Washers, Inconel Washers, Hastelloy Washers, Incoloy Washers, Monel Washers, Copper Washers, Brass & Copper Nickel Washers etc.
Diameter Range	M03 TO M110 AND 1/8” TO 3” Bigger sizes can be manufactured as per order

Fasteners Coating

• Electro Galvanized
• Hot Dip Galvanized
• Black
• Dracomet
• Zinc Plated
• PTFE
• Yellow
• TIN
• Client Specific Requirements

Types of Washers

Following are the types of washers

1. Spring washer
2. Belleville or conical washer
3. Dome spring washer
4. Wave spring washer
5. Finger spring washer
6. Crescent spring washer
7. Lock washer
8. Split lock washer
9. External tooth lock washer
10. Internal tooth lock washer
11. Plain washer
12. Square washer
13. Torque washes
14. Flat washer
15. Fender washer
16. Finishing or Countersunk washer
17. Shoulder washer
18. C-washer

Specifications for Fasteners

MSTAR ENTERPRISES is a Dominant and Expert manufacturer of high-quality bolts, Hub bolts, U-bolts, Hex bolts, spring bolts, Shackle bolts, Nuts, Long bolts and Stud bolts, screws ,washers We likewise fabricate these items as per client’s Requirement and Specification.

Screws, Screws Manufacturers and Screws suppliers, Screws exporters in mumbai, india.

MSTAR ENTERPRISES is one of the most recognized Manufacturer & Exporter of High Tensile Screws in India.The raw materials used have been tested and then used to confirm the robust and sturdy character of this product.

Following are the main parts of the screw:

1. Drive
2. Head
3. Threaded shank
4. Non-threaded shank
5. Thread
6. Thread length
7. Tip
8. Crest
9. Screw thickness

Types of Screws

Following are the types of Screws:

1. Cararige bolts
2. Flat head screw
3. Flange head screw
4. Binding head screw
5. Decking screws
6. Double ended screw
7. Drywall screw
8. Eye bolt screw
9. Framing screw
10. Fillister head screw
11. Hex cap screw
12. Hammer drive screw
13. Lag screw
14. Machine screw
15. Masonry screw
16. Oval head screw
17. Pan-head screw
18. Particle board screw
19. Philips head screw
20. Rivet
21. Large Flange Pop Rivet
22. Solid head rivet
23. Multi grip rivet
24. Pop rivet
25. Square head bolts
26. Self-drilling screw
27. Set screw
28. Shoulder screw
29. Sheet metal screw
30. Socket-head screw
31. Thread cutting screws
32. Washer-faced screws
33. Wood screws
34. Weld screws
35. Tamper-proof screw

Specifications for Fasteners

MSTAR ENTERPRISES is a Dominant and Expert manufacturer of high-quality bolts, Hub bolts, U-bolts, Hex bolts, spring bolts, Shackle bolts, Nuts, Long bolts and Stud bolts, Screws.We likewise fabricate these items as per client’s Requirement and Specification.

Nuts, Hex Nuts manufacturers and exporters, suppliers in India at best Price

MSTAR ENTERPRISES is one of the most recognized Manufacturer & Exporter of High Tensile Nuts Fasteners in India.The raw materials used have been tested and then used to confirm the robust and sturdy character of this product.

Specification of Nuts

Coating

• Electro Galvanized
• Hot Dip Galvanized
• Black
• Dracomet
• Zinc Plated
• PTFE
• Yellow
• TIN
• Client Specific Requirements

Types of Nuts

When compared with other types of fasteners, the use of nuts and bolts has the advantage that they can be disassembled as needed, while other fasteners such as rivets are designed for permanent installation. Bolts are often used with nuts and washers, where the washer provides an increase in surface area over which the attachment force is applied. There are a variety of different types of nuts that can be used with a bolt, the most common one being hex nuts. Other nut types include:

• Locknuts
• Hex nut
• Nylon nut
• Wing nut
• Heavy hex nut
• Jam nut
• Cap nut
• Flange nut
• Long nut
• Slotted hex nuts
• Flange nuts
• Cap nuts
• Coupling nuts
• Thumb nuts (also known as wing nuts)
• Square nuts
• Panel nuts
• Surface mount nuts

Nuts and bolts can be used to join different materials together including wood, sheet metal, steel, iron, and polymers. In other cases, such as with slotted hex nuts, they can be used with a mating bolt and a cotter pin to securely lock the nut in place.

Common hand tools or power tools are available to use with bolts and nuts, which include socket sets, open-end wrenches, box wrenches, and powered drivers.

Common Nut Types

Nut Visual / Name	Nut Description
	Grade 2 A six-sided internally threaded fastener made from low carbon steel. Finished hex nuts are a versatile and widely used nut design. Grade 2 nuts are for use with any low carbon bolt or screw that is not heat-treated, with a specified minimum tensile strength of 74,000 psi or less. Material- low carbon steel which conforms to the following chemical composition requirements– Carbon: 0.47% maximum; Phosphorus: 0.12% maximum; Sulfur: 0.23% maximum. Hardness- Rockwell B68 – C32 Proof Load- Coarse thread: 90,000 psi. / Fine thread: 80,000 psi. Hot Dip Galvanized Steel A six-sided internally threaded fastener made from low carbon steel with a galvanic zinc coating. Use with low carbon bolts and screws that are subjected to moisture, salt and other such corrosive conditions with a specified minimum tensile strength of 74,000 psi or less. Material- low carbon steel which conforms to the following chemical composition requirements– Carbon: 0.47% maximum; Phosphorus: 0.12% maximum; Sulfur: 0.23% maximum. Hardness- Rockwell B68 – C32 Proof Load- Coarse thread: 68,000 psi. / Fine thread: 60,000 psi. 304 & 316 Stainless Steel Six-sided internally threaded fasteners made from austenitic alloys. Use with stainless steel bolts and screws with a specified minimum tensile strength equal to or less than the specified proof stress of the mating nut. Type 304- the most common grade: (18% chromium, 8% nickel) stainless steel. Type 316- chromium-nickel stainless steel, contains 2 to 3 % molybdenum. The molybdenum content increases corrosion resistance, enhances resistance to pitting and augments strength at high temperatures. Material- 18-8 (18% chromium, 8% nickel): manufactured from one of the following austenitic alloys: 303, 303Se, 304, XM7 316: manufactured from 316 stainless steel, an austenitic alloy with molybdenum content (2-3%) and a higher nickel content (10-14%) than 18.8 Hardness- 1/4 through 5/8″: Rockwell B95 – C32; 3/4 through 1″: Rockwell B80 – C32 Proof Load- Coarse thread: 1/4 through 5/8″: 100,000 psi. / Fine thread: 85,000 psi.
	A six-sided internally threaded fastener with flat tops and chamfered corners. Threads shall be Unified Standard, Class 2B. Designed to be used specifically with machine screws. A small pattern machine screw nut is available, similar in design to standard hex machine screw nuts but with smaller widths across the flats and across the corners. Stainless machine screw nuts are used with stainless machine screws where parts are subject to corrosive conditions.
	A four-sided, internally threaded fastener, tops and bottoms flat, without chamfer. Threads shall be Unified coarse thread, Class 2B. Offers a greater bearing surface for wrenching.
	A four-sided, low carbon steel, internally threaded fastener with a flat bottom side and a chamfered, washer-crowned top, designed to be used with square head bolts. A heavy pattern, with a plain finish is available for use with A307 Grade A or Grade B bolts.
	A six-sided internally threaded fastener which is only 2/3 the thickness of a full form nut but has the same dimensions across the flats and corners. It can be threaded on a bolt and run tight against a standard hex nut which will lock the nut in place and prevent it from backing off. Jam nuts are also used for leveling or when a low profile is required. Available in low carbon steel, Grade 5 medium carbon steel, Grade 8 high alloy steel and 304 stainless steel.
	Hex nut with opposite slots that are cut into the top of the nut through the centers of the flats. The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener. Finished pattern slotted uts are made from a low carbon steel and are zinc plated. Heavy hex pattern can withstand a slightly higher proof load and comes in a plain finish.
	A six-sided internally threaded fastener which is thicker and wider across the flats than a same-sized finished hex nut. Nuts measuring 7/16” and smaller are double-chamfered. Larger sizes are either double chamfered or chamfered on top with a washer base. Grade A nuts are used with low carbon steel heavy hex bolts. Grade 5 are used with medium carbon cap screws and bolts. Grade C nuts are recommended to be used with A325 structural bolts. Grade 2H nuts are recommended for use in high pressure and high temperature service. Grade DH are recommended for use with A490, Type 1 structural bolts and Grade DH3 for A490, Type 3 structural bolts. Use 18.8 stainless steel heavy hex nuts for corrosion resistance. Hot Dip Galvanizing available on Grade A, 2H, and A563DH heavy hex nuts. Hardness Grade 5 – Rockwell C32 max Grade A – Rockwell B68-C32 Grade C – Rockwell B78-C38 A194 Grade 2H – Rockwell C24-C38 A563 Grade DH & DH3 – Rockwell C24-C38 18.8 Stainless Steel – ¼” through 5/8”, Rockwell B95-C32, ¾” through 1”, Rockwell B80-C32 Proof Load Grade 5 – ¼” through 1” diameter course thread- 133,000 psi., fine thread 120,000 psi. Grade A – course thread – 100,000 psi., fine thread 90,000 psi. Grade C – 144,000 psi. A194 Grade 2H – 150,000 psi. A563 Grade DH & DH3 – 175,000 psi. 18.8 Stainless Steel – ¼” through 5/8”, 100,000 psi., ¾” through 1”, 85,000 psi.
	An all-metal, one-piece, hex-shaped all metal prevailing torque lock nut with a round collar at its back end. The collar is segmented with opposite slots cut into it above each corner of the nut. When a screw or bolt reaches the collar, the slotted portion expands which created the prevailing torque locking action. Higher temperature use than nylon insert locknuts. The nuts are impact, shock and vibration resistant. Flexlock® Lock Nuts are available in Light Hex Full and Thin Height, and Heavy Hex Full and Thin Height. Light Hex are available in 18.8 stainless steel and steel cadmium and wax finishes, Heavy Hex is available in a steel cadmium and wax finish.
	Grade 5 nuts achieve their strength through cold forming. The proof load of the nut should be greater than the minimum tensile strength of the bolt to ensure that if overloaded, the bolt breaks rather than the nut threads shearing or stripping. Grade 5 finished hex nuts are designed to be used with Grade 5 hex cap screws. Grade 5 finished hex nuts typically have a clear trivalent chromate finish. The marking requirements are covered in SAE J995, Grade 5 are marked with two circumferential lines located 120° apart. Material- manufactured from steel with a maximum carbon content of 0.55%, a minimum manganese content of 0.30%, and a maximum sulfur content of 0.15%. AISI 1008-1026 or equivalent Hardness- Rockwell C32 max Proof Load- Coarse Thread: 1/4″ through 1″ 120,000 psi. / Fine Thread: 109,000 psi / Coarse Thread: 1-1/8″ – 1-1/2″ 105,000 psi. / Fine Thread: 94,000 psi
	Grade 8 nuts are heat treated to provide a greater level of strength. The proof load of the nut should be greater than the minimum tensile strength of the bolt to ensure that if overloaded, the bolt breaks rather than the nut threads shearing or stripping. Grade 8 nuts are designed to be used with Grade 8 cap screws. A stronger nut can nearly always be used with a weaker bolt, a Grade 8 nut is acceptable for use on a Grade 5 cap screw. Grade 8 nuts typically have a yellow chromate finish. The marking requirements are covered in SAE J995, The marking requirements are covered in SAE J995, Grade 8 nuts are marked with two circumferential lines located 60° apart. Material- manufactured from steel with a maximum carbon content of 0.55%, a minimum manganese content of 0.30%, and a maximum sulfur content of 0.05%. AISI 1021-1045 or equivalent steel. Hardness- 1/4″ through 5/8″: Rockwell C24-C32 / 3/4″ through 1″: Rockwell C26-C34 / Over 1″ – 1-1/2″: Rockwell C26-C36 Proof Load- 1/4″ through 1-1/2″ 150,000 psi
	Similar to a slotted nut with the following difference: the slots are cut into a cylindrical portion that is equal in length to the slot depth and slightly smaller in diameter than the hex width. The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener. Available in low carbon steel and Grade 5 SAE 1010-1022 steel.
	A hex flange nut with serration is a nut that is formed with an enlarged circular base that flares out from the bottom of the nut. When the nut is torqued into place, the bearing surface of the serrated base displaces the material of the mating surface. This forms a locking effect which resists vibrational loosening. The flanged surface will span an oversized hole and provide a more uniform bearing- stress to clamp-force ratio than a finished hex nut and will not gall screw threads. A large flange nut is available with a base that is 6 to 25% wider than the base of a standard serrated flange nut. Carbon steel nuts are case-hardened to Rockwell HR15N 78-90. Also available in Grade 5 and Grade 8 steel and 18.8 stainless steel.
	Hex nut with an enlarged circular base flaring out from the bottom of the nut. The bearing surface of the flange is smooth with no serrations. Used to span oversized or irregular holes.
	A hex nut with two components, a hex nut and a nylon filled collar at its back end. When a screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement of the screw when it is subject to vibration. The nylon insert provides reusability. When removed, the nylon relaxes and begins to return to its original shape providing continued use of the locking feature. Designed for applications with temperatures of up to 250°F. Nylon Insert Locknuts are available in different series/types and materials, including: NE (Light Hex, Standard Height), NTE (Light Hex, Thin Height), NTU (Heavy Hex, Thin Height), NU (Heavy Hex, Full Height), NM (Machine Screw Pattern, Standard Height), and NTM (Machine Screw Pattern/Thin (Jam) Height). Available in steel, stainless steel, brass and aluminum.
	A hex nut pre-assembled with a free spinning external tooth lock washer. The locking action is achieved when the nut is tightened against a bearing surface as the teeth of the lock washer dig into it. The nuts are manufactured from AISI 1008-1020 or equivalent steel; and the washers from 1050-03 or equivalent steel. Also available in 18.8 stainless steel.
	All Metal Hex Lock Nuts are designed to increase the resistance to rotation by developing a “prevailing torque” action between the bolt threads and the nut threads. This prevailing torque action is developed by “crimping” the nut to create added friction between the threads of the nut and the bolt. All metal lock nuts feature a crowned top that is crimped to create the locking feature. This crowned top design is called a “stover” style lock nut. The crimp provides a locking ability and resistance to loosening in high vibration applications. All metal lock nuts are made to the material properties and strength requirements as per the standard IFI 100/107 for Grade C which is designed to be used on fasteners up to a Grade 8 strength level.
	Rod coupling nuts are used to connect two pieces of threaded rod. Available in low carbon steel, plain and hot dip galvanized finish, grade 5 and 18.8 stainless steel. Hot-dip galvanizing generally adds 2.5 to 5 mils of thickness to the threaded portion of a fastener, so galvanized couplers are tapped oversize to accommodate the added thickness to the corrosion resistant coating on the bolts.
	A hex nut with two or three round or rectangular indentations, compressed on to the flat sides of the nut equal distances from each other. The compressions create slightly distorted center threads resulting in a controlled locking action when the threads of a mating part become engaged. Used primarily with machine screws, low carbon steel bolts and 18.8 stainless steel bolts. It allows for automatic assembly ability to be used either top-up, or top-down. It creates a locking action even without being fully threaded onto its mating screw.
	3-prong tee nuts are used to fasten a metal piece to a component that is made of wood, plastic, or particleboard, or for anchoring wood components to each other. 3 Prong T-Nuts are used mostly in hard materials to minimize splitting caused by prongs. Available in steel zinc and steel black zinc plated.
	Low crown steel cap nuts are usually manufactured in two pieces, a hex nut and an acorn-shaped top, with a zinc die cast to form the finished nut. Stainless steel cap nuts are similar in design to the steel nut but made from 304L or an equivalent stainless and can be a one or two-piece style. Available in the aforementioned stainless steel and steel with a nickel plating or black zinc finish and black oxide. Cap nuts are used for decorative purposes or as covers for projecting threads.
	A nut with wings which allow the part to be manually turned. Manufactured from carbon steel that is adaptable to the cold-forging process. Available in a zinc plated finish, black oxide and nickel and 18.8 stainless steel.

Specifications for Fasteners

MSTAR ENTERPRISES is a Dominant and Expert manufacturer of high-quality bolts, Hub bolts, U-bolts, Hex bolts, spring bolts, Shackle bolts, Nuts, Long bolts and Stud bolts.We likewise fabricate these items as per client’s Requirement and Specification.

Hex Bolts, Hex Bolts Manufacturers and Suppliers at best Price, Hex Bolts Exporters in India.

MSTAR ENTERPRISES is one of the most recognized Manufacturer & Exporter of High Tensile Hex Bolts Fasteners in India.The raw materials used have been tested and then used to confirm the robust and sturdy character of this product.

Specification of Hex Bolts

Types of Bolts?

There are many different types of bolts, each having different characteristics that make them suitable for use across a wide range of applications. The principal types of bolts commonly used include:

• Anchor Bolts
• Blind Bolts
• Carriage Bolts
• Double End Bolts
• Eye Bolts
• J-Bolt
• Allen Bolt
• Flange Bolts
• Hex Bolts
• Hex Flanges Bolt
• Machine Bolts and Machine Screws
• Penta-Head Bolts
• Round Head Bolts
• Shoulder Bolts
• Socket Head Bolts
• Square Head Bolts
• Heavy Hex Bolt
• Haft Thread Bolt
• T-Head Bolts
• U-Bolts

Common Bolts Types

Bolt Visual / Name

Bolt Description

Hex Head Cap Screw

Hex head cap screws are manufactured to dimensional standards of ASME B18.2.1 and to various material and mechanical standards of ASTM and SAE. The length of a cap screw is measured from under the head to the extreme end of the screw. Standard thread length is two times the diameter plus ¼ up to 6” length and two times the diameter plus 1/2” for screws longer than 6”. Shorter length screws are fully threaded.

Grade 2

A low or medium carbon steel, externally threaded mechanical device 1/4″” diameter or larger, with a trimmed hex head and a washer face on the bearing surface.

Applications

Grade 2 (A307A) Cap Screws are made from low carbon steel that achieve their strength primarily from cold working during the cold forming manufacturing operation. Economical for use in non-critical applications where the fastener is not subject to extreme temperatures or stress.

Grade 5

A cap screw made from medium carbon steel and heat-treated.

Applications

Grade 5 (A449) Cap Screws are medium strength fasteners that achieve their strength from a quench and temper heat treatment and have a greater tensile strength than a Grade2. Yield-to-tensile ratio is the lowest of all heat-treated steels.

Grade 8

A cap screw made from medium carbon alloy steel and heat-treated.

Applications

Grade 8 (A354 GR BD) Cap Screws are the highest strength of standard inch series cap screws and are made from alloy steel and have greater tensile strength than Grade 5. Designed for use in high stress applications.

Stainless Steel

18.8 and 316 stainless steel cap screws manufactured from austenitic alloys. The molybdenum content of 316 stainless steel screws give them a higher resistance to corrosion and superior strength at high temperatures. Common uses for 316 stainless steel screws include exhaust and furnace parts, jet engine parts, pharmaceutical and photographic equipment, pump parts, chemical processing equipment, tanks, and evaporators. It also is used in pulp, paper, and textile processing equipment and any parts exposed to marine environments.

Applications

18-8 stainless steel screws are used in products that require general atmospheric corrosion resistance, such as chemical, food and drug equipment, bearing plates, heat exchanger tubes, pumps and valves.

Carriage Bolt Short Neck

A round head bolt with a short, square shoulder under the head, and a unified thread pitch. The bolt is made from low or medium carbon steel.

Applications

Carriage bolts are designed to keep the bolt from turning when a nut is being tightened. The short neck variety is used in sheet metal where a standard sized neck would create an obstruction.

Hex Head Machine Bolt

Galvanized

A low or medium carbon steel, externally threaded mechanical device, 1/4 inch in diameter or larger, with a trimmed hex head and a hot-dip galvanized coating. A hex bolt does not have a washer face on its bearing surface as does a hex cap screw, nor does it have a machined point. Its body tolerances are not as close as those of a cap screw.

Applications

Designed to be used in highly corrosive environments (coastal locales and heavily polluted atmospheres). May be inserted into an oversized hole and should be assembled with a nut.

Carriage Bolt Ribbed Neck

A round head bolt with a ribbed or serrated shoulder made from low carbon steel.

Applications

For use in soft, ductile metals, wood and plastics to keep the bolt from turning when the nut is being tightened.

Hex Head Tap Bolt

A tap bolt is a hex head bolt with a machined point that is threaded to the head. The length of a tap bolt is measured from the under the head bearing surface to the extreme end of the bolt. Tap Bolts have tolerances similar to those of cap screws and essentially serve as fully threaded cap screws. Tap Bolts available in Grade and Grade 5 steel with a zinc plated finish and Grade 8 zinc yellow plated.

Applications

• A307 Tap Bolt: Use in drilled and tapped holes that are threaded full length. Use in place of a stud and a nut.
• Grade 5 Tap Bolt: Use to mount motors to machinery; also popular in automotive and truck repair.
• Grade 8 Tap Bolt: Use in industries where greater tensile strength is required than can be met by a grade 5.
• Stainless Steel Tap Bolt: Use in in environments corrosive to carbon steel and in tapped holes that are threaded full length.

Heavy Hex Structural Bolt

ASTM A325 and ASTM A490 specifications provide for two types, according to metallurgical classification, of high-strength bolts, supplied in diameters from ½” to 1-1/2” inclusive. Type 1 covers medium carbon steel for ASTM A325 bolts and alloy steel for ASTM A490 bolts. Type 3 covers high-strength bolts that have improved atmospheric corrosion resistance and weathering characteristics.

The principal features of heavy-hex structural bolts that distinguish them from bolts for general application are the size of the head and the unthreaded body length. The head of the heavy-hex structural bolt is specified to be the same size as a heavy-hex nut of the same nominal diameter so that the worker may use the same wrench or socket either on the bolt head and/or on the nut.

ASTM A325 Type 1

A heavy hex bolt made of medium carbon steel. The bearing surface shall be flat and washer faced, and the point is chamfered.

Applications

Commonly used in structural steel joints in heavy construction.

ASTM A490 Type 1 & 3

A heavy hex bolt made of alloy steel. The bearing surface shall be flat and washer-faced, and the point is chamfered.

Applications

Used in structural steel joints in heavy construction when greater yield and tensile strengths than those of an A325 bolt are required. A Type 3 bolt is approximately twice as resistant to corrosion as a Type 1 bolt.

Square Head Bolt

A low or medium carbon steel, externally threaded mechanical device 1/4″ diameter or larger, with a trimmed square shaped external wrenching head.

Applications

Offers greater bearing surface for wrenching than hex head bolts.

Plow Bolt

Bolt with a countersunk, flat head, square neck and unified thread pitch, made from medium-carbon steel.

Applications

Used to bolt a leading blade edge to a plow board on heavy equipment like bulldozers, snow plows, road-graders, scoop shovels and agricultural plows.

Grade 8

Plow bolts made from heat-treated alloy steel and providing greater tensile and proof load strength.

Applications

Used to bolt a leading blade edge to a plow board on heavy equipment like bulldozers, snow plows, road-graders, scoop shovels and agricultural plows.

Tension Control Bolt

The Tension Control bolting system has quickly become the most widely used method of tensioning high strength structural bolts. The Tension Control System consists of one each: A325 TC Bolt, A194 2-H Heavy Hex Nut, F-436 Flat Washer. The Tension Control assembly include is enables a cost effective, one operator, single sided installation.

Applications

The ease of use and economic benefits has provided tens of thousands of projects with consistent, reliable, and economical steel connections. The TC bolt is formally recognized by the AISC (American Institute of Steel Construction) and the RCSC (Research Council on Structural Connections) as an approved installation method.

B7 Continuous Thread Stud

An externally threaded fastener without a head that is threaded over its entire length. Studs are typically provided plain without a secondary finish. ASTM A193 Grade B7 threaded studs are manufactured from a chromium-molybdenum steel and are heat treated to develop the desired mechanical strength properties.

Applications

B7 studs are best suited for use in temperatures between 300° – 400° C. Grade B7 is the most common grade of A193 bolts used in construction.

Hex Head Lag Screw

A full-bodied bolt with a hex head, spaced threads and a gimlet point. Driven in with a socket wrench or impact gun. A lag screw can be used with a lag shield, which are concrete anchors that expand near the bottom to hold the shield inside of a drilled hole. Lag shields are made specifically for the installation of lag screws into masonry materials.

Applications

• Steel, Electro-plated Zinc: For use in wood in non-corrosive environments.
• Hot-Dip Galvanized: For use in corrosive environments.
• Stainless: Has superior corrosion resistance to galvanized steel bolts.

Hanger Bolt

Bolt with threads at both ends, lag screw thread and machine screw thread. Standard hanger bolts are intended for insertion into a predrilled pilot hole. The end of the wood thread is designed as a taper which is threaded all the way to the blunt tip. Available fully threaded in steel zinc and 18.8 stainless steel. Also available with a plain center in steel zinc and 18.8 stainless steel.

Applications

Hanger bolts are ideal for overhead applications, such as suspending electrical wiring or sheet metal from wooden structures. Also used in the light commercial and residential construction industry to attach wall-mounted porcelain plumbing fixtures (toilets, sinks, and urinals) to wood framing.

Carriage Bolt

Carriage bolt length is measured from under the head to the end of the bolt including the square neck.

• Low Carbon Steel: Round head bolt with square neck and a unified thread pitch. Made from low or medium carbon steel
• Hot Dipped Galvanized Steel: Round head bolt with square neck and a unified thread pitch. Made from low or medium carbon steel with a galvanized zinc finish applied
• Grade 5: Carriage bolt made from medium carbon steel and heat-treated
• Grade 8: Carriage bolt made from medium carbon alloy steel and heat-treated
• Stainless Steel: Corrosion and rust resistant

Applications

• Low Carbon Steel: The square neck is designed to keep the bolt from turning as the nut is tightened. Available full and partially thread in zinc, black oxide and black zinc finish
• Hot Dipped Galvanized Steel: Often used outdoors because of the thicker protective coating
• Grade 5: Greater load carrying capacity compared to a low carbon carriage bolt. Available full body with 6” thread, fully or partially threaded
• Grade 8: Greater load carrying capacity compared to a Grade 5 carriage bolt. Available fully threaded in plain and zinc yellow finish

Elevator Bolt

Bolt with a wide, countersunk flat head, a shallow conical bearing surface, an integrally-formed square neck under the head, and a unified thread pitch. Made in Grade 2 steel with a zinc plated finish.

Applications

Originally used to attach elevator buckets to a belt in a grain elevator. Elevator bolts are used in a variety of applications wherever head clearance is crucial. The head is not designed to turn, elevator bolts are usually tightened by a hex nut. Length is measured from the top of the head to the threaded end of the bolt. The head size is a large diameter, flush style, which reduces the chance of pull-through.

Step Bolt

Similar to a carriage bolt in bearing surface and square-neck design, but with a wider, lower-profile, round head.

Applications

Preferred for use where wood is bolted down as decking–the larger diameter head of the step bolt will not pull through the soft wood. Smooth, low, rounded head permits unrestricted movement over the surface.

Eye Bolt

An Eyebolt is a bolt with a loop at one end. They are used to firmly attach a securing eye to a structure so that ropes or cables may then be tied to them. Manufactured in carbon or stainless steel, NOT recommended for overhead lifting.

Applications

Also known as nut eyebolts, these are designed for through-hole applications. Use them for routing wire and for other light duty applications.

Serrated Hex Washer Head Flange Screw

Unslotted hex washer head screws with a unified thread pitch and a flange that has serrations on the bearing surface side. Manufactured from Grade 5 medium carbon steel with a zinc plated finish. Also available in Grade 8 medium carbon alloy steel and 18.8 stainless steel.

Applications

Designed for use in applications where loosening forces are present, such as vibration. The serrations grip to the bearing surface so that significantly more torque is needed to loosen than to tighten the screw. The flange provides more strength than a standard machine screw. Eliminates the need for a lock washer or lock nut in certain applications.

Threaded Rod

Produced from cold rolled steel. Rolled threads offer increased strength, uniform accuracy and a higher degree of surface finish than machine cut threads, in addition to being lower cost. Threaded rod can be used with nuts and washers and may be purchased in standard stock lengths or cut to customer specifications. Available in low carbon steel (plain, zinc and galvanized), ASTM B7/B16, 304 and 316 stainless steel.

Applications

Use these for hanging, mounting, and fastening, securing pressure tanks, valves, and flanges.

Anchor Bolt

A headless fastener with a partially threaded shank. A portion of the top unthreaded section of the bolt is bent at a 90 degree angle. Material is ASTM A36C steel 1018/1020. It is recommended that bolts are supplied with nuts that conform to ASTM A194 or A563 Grade A heavy hex nuts and washers that conform to ASTM F436 Type 1.

Applications

Anchor bolts are imbedded in concrete and used to support structural steel columns, light poles, highway sign structures, bridge and rail equipment. Provided in plain finish or hot galvanized steel.

U-Bolt

A U-Bolt is a bolt in the shape of a “U” with machine screw threads on both legs. Manufactured from low carbon steel zinc plated or hot dip galvanized and 304 and 316 stainless steel.

Applications

U-bolts support heavy pipe, tube, and conduit from ceilings, walls, and poles.

BoxBolt

BoxBolt is an expansion anchor for steel that can be used to make connections to structural tube sections. The BoxBolt is suitable for use with rectangular, square and circular sections, or other types of steelwork where access is restricted to one side only. The shoulder of the BoxBolt is hexagonal, allowing it to be held in position with an open-ended wrench while a torque wrench is used to tighten the core bolt. As the core bolt is tightened the threaded wedge is drawn up inside the body, the fins expand, and a secure connection is made. Available in three finishes; zinc plated, hot dip galvanized and stainless steel for the most demanding of applications.

Hex Bolts Coating

• Electro Galvanized
• Hot Dip Galvanized
• Black
• Dracomet
• Zinc Plated
• PTFE
• Yellow
• TIN
• Client Specific Requirements

Specifications for Fasteners

MSTAR ENTERPRISES is a Dominant and Expert manufacturer of high-quality bolts, Hub bolts, U-bolts, Hex bolts, spring bolts, Shackle bolts, Nuts, Long bolts and Stud bolts.We likewise fabricate these items as per client’s Requirement and Specification.