System of Measurement System of Measurement |
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Thread Size Thread Size |
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Finish Finish | Show |
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Finish Finish | Hide |
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Material Material |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Threading Threading |
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Thread Direction Thread Direction |
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Nut Type Nut Type |
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Height Height |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Hardness Hardness |
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Tensile Strength Tensile Strength |
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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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Hex Nut Profile Hex Nut Profile |
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| Standard | Extra Wide |
Head Type Head Type |
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 | Hex |
About Threaded Studs and Rods
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About Nuts, Materials, and Finishes
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About Hex Head Screws and Bolts
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Stainless Steel Hex Screw and Nut Kits for Pipe Flanges
Use these kits to connect standard-size stainless steel pipe flanges for ANSI Class 150 or 300. They meet ASTM specifications for material quality, and the dimensions meet ASME specifications. Length of screws is measured from under the head.
316 stainless steel kits are more corrosion resistant than 18-8 stainless steel and have excellent resistance to chemicals and salt water. They may be mildly magnetic. Some kits have blue PTFE-coated nuts. This coating is slippery, chemical-resistant, and prevents galling. It also helps nuts thread smoothly.
For technical drawings and 3-D models, click on a part number.
Screw | Nut | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Pipe Size | Lg. | Min. Thread Lg. | Head Wd. | Head Ht. | Tensile Strength, psi | Specifications Met | Wd. | Ht. | Specifications Met | For Max. Pressure | Each | |
316 Stainless Steel with Blue-PTFE-Coated Nuts for Class 150 Stainless Steel Flanges | ||||||||||||
5/8"-11 | ||||||||||||
| 3 | 3" | 1 1/2" | 15/16" | 13/32" | 80,000 | ASME B18.2.1, ASTM F593 | 15/16" | 35/64" | ASME B18.2.2, ASTM F594 | 270 psi @ 72° F | 000000000 | 000000 |
| 4 | 3" | 1 1/2" | 15/16" | 13/32" | 80,000 | ASME B18.2.1, ASTM F593 | 15/16" | 35/64" | ASME B18.2.2, ASTM F594 | 270 psi @ 72° F | 000000000 | 00000 |
3/4"-10 | ||||||||||||
| 6 | 3 1/4" | 1 3/4" | 1 1/8" | 15/32" | 80,000 | ASME B18.2.1, ASTM F593 | 1 1/8" | 41/64" | ASME B18.2.2, ASTM F594 | 270 psi @ 72° F | 000000000 | 00000 |
| 8 | 3 1/2" | 1 3/4" | 1 1/8" | 15/32" | 80,000 | ASME B18.2.1, ASTM F593 | 1 1/8" | 41/64" | ASME B18.2.2, ASTM F594 | 270 psi @ 72° F | 000000000 | 00000 |
7/8"-9 | ||||||||||||
| 12 | 4" | 2" | 1 5/16" | 35/64" | 80,000 | ASME B18.2.1, ASTM F593 | 1 5/16" | 3/4" | ASME B18.2.2, ASTM F594 | 270 psi @ 72° F | 000000000 | 000000 |
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.
Blue 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.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Blue PTFE-Coated Steel—ASTM Grade 2H | ||||||
|---|---|---|---|---|---|---|
| 1/2"-13 | 7/8" | 31/64" | ASTM A194 | 25 | 000000000 | 000000 |
| 5/8"-11 | 1 1/16" | 39/64" | ASTM A194 | 10 | 000000000 | 00000 |
| 3/4"-10 | 1 1/4" | 47/64" | ASTM A194 | 10 | 000000000 | 00000 |
| 7/8"-9 | 1 7/16" | 55/64" | ASTM A194 | 5 | 000000000 | 00000 |
| 1"-8 | 1 5/8" | 63/64" | ASTM A194 | 5 | 000000000 | 00000 |
| 1 1/8"-8 | 1 5/8" | 1 7/64" | ASTM A194 | 1 | 000000000 | 0000 |
| 1 1/4"-8 | 2" | 1 7/32" | ASTM A194 | 1 | 000000000 | 00000 |
| 1 3/8"-8 | 2 3/16" | 1 11/32" | ASTM A194 | 1 | 000000000 | 00000 |
| 1 1/2"-8 | 2 3/8" | 1 15/32" | ASTM A194 | 1 | 000000000 | 00000 |
| 1 3/4"-8 | 2 3/4" | 1 23/32" | ASTM A194 | 1 | 000000000 | 00000 |
| 1 7/8"-8 | 2 15/16" | 1 27/32" | ASTM A194 | 1 | 000000000 | 00000 |
| 2"-8 | 3 1/8" | 1 31/32" | ASTM A194 | 1 | 000000000 | 00000 |
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.
Blue PTFE-coated steel threaded rods are chemical resistant and have a slippery surface to thread on smoothly.
For technical drawings and 3-D models, click on a part number.
| Lg. | Tensile Strength, psi | Hardness | Specifications Met | Each | |
1/4"-20 | |||||
|---|---|---|---|---|---|
| 1" | 125,000 | Rockwell C32 | ASTM A193 | 000000000 | 00000 |
| 1 1/2" | 125,000 | Rockwell C32 | ASTM A193 | 000000000 | 0000 |
| 2" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 3" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 4" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
5/16"-18 | |||||
| 1 1/2" | 125,000 | Rockwell C32 | ASTM A193 | 000000000 | 0000 |
| 2" | 125,000 | Rockwell C32 | ASTM A193 | 000000000 | 0000 |
| 3" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 4" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
3/8"-16 | |||||
| 1 1/2" | 125,000 | Rockwell C32 | ASTM A193 | 000000000 | 0000 |
| 2" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 3" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 4" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
1/2"-13 | |||||
| 2" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 2 1/2" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 3" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 4" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 5" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 6" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 6ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
5/8"-11 | |||||
| 3" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 3 1/2" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 4" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 5" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 6" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 6ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
3/4"-10 | |||||
| 3" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 4" | 125,000 | Rockwell C32 | ASTM A193 | 000000000 | 0000 |
| 4 1/2" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 5" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 6" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 7" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 8" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 9" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 6ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 000000 |
7/8"-9 | |||||
| 5" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 6" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 6ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 000000 |
1"-8 | |||||
| 6" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 7" | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 1ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 6ft. | 125,000 | Rockwell C35 | ASTM A193 | 000000000 | 000000 |