System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Length Length |
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Material Material |
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Threading Threading |
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Thread Direction Thread Direction |
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Head Type Head Type |
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 | Hex |
Hex Nut Profile Hex Nut Profile |
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Hardness Hardness |
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Specifications Met Specifications Met |
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Tensile Strength Tensile Strength |
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Drive Style Drive Style |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Threaded Studs and Rods
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About Nuts, Materials, and Finishes
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About Lifting with Hoist Rings
More
About Hex Head Screws and Bolts
More
How to Install Helical Inserts
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About Helical Insert Length
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Steel Heavy Hex Head Screws for High-Pressure Applications
These Grade B7 steel screws are nearly twice as strong as our stainless steel screws for high-pressure applications. Also known as pressure bolts, they meet the high-pressure and high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges. Length is measured from under the head. Screws should be used with ASTM A194 nuts.
Partially threaded screws come with precise threaded and unthreaded portions, allowing you to place only the stronger unthreaded portion (grip) in joints subjected to sideways forces.
For technical drawings and 3-D models, click on a part number.
Screws | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Steel Hex Nuts | ||||||||||||
| Lg. | Threading | Thread Spacing | Thread Lg. | Grip Lg. | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Each | Pkg. Qty. | Pkg. | ||
ASTM Grade B7 Steel | |||||||||||||
1 1/4"-8 | |||||||||||||
| 3" | Fully Threaded | Coarse | __ | __ | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 000000 | 1 | 000000000 | 00000 |
| 3 1/4" | Fully Threaded | Coarse | __ | __ | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 3 1/2" | Fully Threaded | Coarse | __ | __ | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 3 3/4" | Fully Threaded | Coarse | __ | __ | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4" | Partially Threaded | Coarse | 2 3/4" | 1 1/4" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4 1/4" | Partially Threaded | Coarse | 2 3/4" | 1 1/2" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4 1/2" | Partially Threaded | Coarse | 2 3/4" | 1 3/4" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5" | Partially Threaded | Coarse | 2 3/4" | 2 1/4" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5 1/4" | Partially Threaded | Coarse | 2 3/4" | 2 1/2" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5 1/2" | Partially Threaded | Coarse | 2 3/4" | 2 3/4" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5 3/4" | Partially Threaded | Coarse | 2 3/4" | 3" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6" | Partially Threaded | Coarse | 2 3/4" | 3 1/4" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6 1/4" | Partially Threaded | Coarse | 3" | 3 1/4" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6 1/2" | Partially Threaded | Coarse | 3" | 3 1/2" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 7" | Partially Threaded | Coarse | 3" | 4" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 7 1/2" | Partially Threaded | Coarse | 3" | 4 1/2" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 8" | Partially Threaded | Coarse | 3" | 5" | 2" | 25/32" | 125,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
Extreme-Strength Steel Extra-Wide Hex Nuts—Grade 2H
Also known as heavy hex nuts, these nuts are about 10% wider and taller than standard hex nuts and distribute the load over a large area. Grade 2H nuts are comparable in strength to Grade 9 bolts. They're about 20% stronger than high-strength steel nuts and are used in heavy machinery, such as earth-moving equipment.
Hot-dipped galvanized steel nuts have a thick coating for better corrosion resistance than zinc-plated steel nuts. They must be used with other hot-dipped galvanized fasteners.
PTFE-coated steel nuts have a slippery surface to resist sticking during installation. They're resistant to chemicals and salt water.
For technical drawings and 3-D models, click on a part number.
Super-Corrosion-Resistant 316 Stainless Steel
Extra-Wide Hex Nuts for High-Pressure Applications
These nuts have excellent chemical resistance and can be used in saltwater environments. They're able to maintain their strength in high-pressure and high-temperature environments and are used with ASTM A193 bolts to fasten pressure tanks, valves, and flanges. Also known as heavy hex nuts, they are about 10% wider and taller than standard hex nuts and distribute the load over a large area. Nuts may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel—ASTM Grade 8M | ||||||
|---|---|---|---|---|---|---|
| 1 1/4"-8 | 2" | 1 1/4" | ASTM A194 | 1 | 000000000 | 000000 |
Steel Extra-Wide Hex Nuts for High-Pressure Applications
Able to maintain their strength in high-pressure and high-temperature environments, these nuts are used with ASTM A193 bolts to fasten pressure tanks, valves, and flanges. Also known as heavy hex nuts, they are about 10% wider and taller than standard hex nuts and distribute the load over a large area.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Steel—ASTM Grade 7 | ||||||
|---|---|---|---|---|---|---|
| 1 1/4"-8 | 2" | 1 7/32" | ASTM A194 | 1 | 000000000 | 00000 |
High-Strength Steel Nylon-Insert Locknuts—Grade 8
A nylon insert grips the bolt to resist loosening without damaging threads. These nuts are reusable, but their holding power lessens with each use. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel locknuts.
Steel locknuts without a finish are ready to be painted or finished.
Zinc yellow-chromate plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Medium-Strength Steel Threaded Rods—Grade B7
These Grade B7 threaded rods meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges.
For technical drawings and 3-D models, click on a part number.
High-Strength 410 Stainless Steel Threaded Rods—Grade B6
Stronger and more wear resistant than 18-8 stainless steel, these 410 stainless steel threaded rods are mildly chemical resistant. They meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges. All are magnetic.
For technical drawings and 3-D models, click on a part number.
| Lg. | Tensile Strength, psi | Hardness | Specifications Met | Each | |
410 Stainless Steel | |||||
|---|---|---|---|---|---|
1 1/4"-8 | |||||
| 3ft. | 110,000 | Not Rated | ASTM A193 | 000000000 | 0000000 |
Stainless Steel Helical Inserts
Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Hoist Rings—For Lifting
Designed for angular lifting, hoist rings resist stresses that would bend or break an eyebolt. They have a lifting ring that pivots 180° front to back and a base that swivels 360° to compensate for pitch, roll, and sway when lifting heavy or unbalanced loads. Install the base of the hoist ring flush to the mounting surface and tighten to the recommended torque that is stamped on the ring. Torque Wrenches are sold separately.
Machined hoist rings have a smooth finish to protect slings and hooks from damage and excess wear during lifting.
Black-oxide steel offers mild corrosion resistance.
Hoist rings that are CE marked meet European requirements for health, safety, and environmental protection.
Note: Capacities listed are for vertical lifting only. As the lift angle changes from vertical, the amount of weight the hoist ring can lift is significantly reduced. For example, when lifting a 1,000 lb. load at a 45° angle, you must choose a hoist ring with a capacity of at least 1,400 lbs. Do not use at an angle less than 30°.
Warning: Never use to lift people or items over people.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Thread Lg. | Inside Wd. | Overall Ht. | Vertical Capacity, lbs. | Movement | Specifications Met | Each | |
Machined Black-Oxide Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1 1/4"-8 | 1 15/16" | 3 1/2" | 10 5/8" | 15,000 | 180° Pivot and 360° Swivel | ASME B30.26, CE Marked, MIL-STD-1365, MIL-STD-209 | 00000000 | 0000000 |