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About Nuts, Materials, and Finishes
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About Hex Head Screws and Bolts
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About Rounded Head Screws
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About Flat Head Screws
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18-8 Stainless Steel Pan Head Phillips Screws
18-8 stainless steel pan head screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head. For partially threaded screws thread length may vary from the minimum thread length published to fully threaded.
PTFE-coated stainless steel screws won’t stick or bind as you thread them into a hole.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi  | Specifications Met | Pkg. Qty. | Pkg. | |
PTFE-Coated 18-8 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
6-32 | |||||||||
| 1/4" | Fully Threaded | 0.270" | 0.097" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 000000 |
| 3/8" | Fully Threaded | 0.270" | 0.097" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.270" | 0.097" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.270" | 0.097" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
8-32 | |||||||||
| 1/4" | Fully Threaded | 0.322" | 0.115" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 0000 |
| 3/8" | Fully Threaded | 0.322" | 0.115" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.322" | 0.115" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.322" | 0.115" | No. 2 | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
10-32 | |||||||||
| 3/8" | Fully Threaded | 0.373" | 0.133" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.373" | 0.133" | No. 2 | 70,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.373" | 0.133" | No. 2 | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.373" | 0.133" | No. 2 | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
1/4"-20 | |||||||||
| 1/2" | Fully Threaded | 0.492" | 0.175" | No. 3 | 70,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.492" | 0.175" | No. 3 | 70,000 | ASME B18.6.3 | 10 | 000000000 | 0000 |
| 1" | Fully Threaded | 0.492" | 0.175" | No. 3 | 70,000 | ASME B18.6.3 | 10 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | 0.492" | 0.175" | No. 3 | 70,000 | ASME B18.6.3 | 10 | 000000000 | 00000 |
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 |
18-8 Stainless Steel Phillips Flat Head Screws
These screws have good chemical resistance and may be mildly magnetic. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
Screws with an undercut profile have a shallow head for use in thin materials.
PTFE-coated stainless steel screws won’t stick or bind as you thread them into a hole.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Flat Head Profile | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
PTFE Coated 18-8 Stainless Steel—82° Countersink Angle | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
6-32 | ||||||||||
| 1/4" | Fully Threaded | Standard | 0.262" | 0.083" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 000000 |
| 3/8" | Fully Threaded | Standard | 0.262" | 0.083" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Standard | 0.262" | 0.083" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Standard | 0.262" | 0.083" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
8-32 | ||||||||||
| 1/4" | Fully Threaded | Undercut | 0.312" | 0.1" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/8" | Fully Threaded | Standard | 0.312" | 0.1" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Standard | 0.312" | 0.1" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Standard | 0.312" | 0.1" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
10-32 | ||||||||||
| 3/8" | Fully Threaded | Standard | 0.362" | 0.116" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Standard | 0.362" | 0.116" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Standard | 0.362" | 0.116" | No. 2 | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | Standard | 0.362" | 0.116" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 3/8" | Fully Threaded | Undercut | 0.477" | 0.153" | No. 3 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Standard | 0.477" | 0.153" | No. 3 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Standard | 0.477" | 0.153" | No. 3 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1" | Fully Threaded | Standard | 0.477" | 0.153" | No. 3 | 80,000 | ASME B18.6.3 | 10 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Standard | 0.477" | 0.153" | No. 3 | 80,000 | ASME B18.6.3 | 10 | 000000000 | 00000 |
18-8 Stainless Steel Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic.
PTFE-coated stainless steel nuts are chemical resistant and have a slippery surface to resist sticking during installation.
For technical drawings and 3-D models, click on a part number.
Extreme-Strength Steel Heavy Hex Nuts—Grade 2H
Because they’re about 10% wider and taller than standard hex nuts, these heavy hex nuts 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 13/16" | 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
Grade B7, these threaded rods have a tensile strength about one and a half times stronger than low-strength steel rods. They 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 |
Heavy Duty Antistatic Electrical Tape
Twice as thick as our standard antistatic electrical tape, this tape is made of abrasion-resistant aramid and antistatic PTFE. Use it for high-temperature wrapping where static can be a problem. This tape is chemical- and UV-resistant and will stand up to harsh environments.
| Wd. | Overall Thick. | Material | Adhesive Type | Temperature Range, °F | Voltage Rating | Color | Each | |
15 ft. | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2" | 0.007" | PTFE-Coated Aramid Fiber | Silicone | -100° to 500° | Not Rated | Black | 0000000 | 000000 |
| 1" | 0.007" | PTFE-Coated Aramid Fiber | Silicone | -100° to 500° | Not Rated | Black | 0000000 | 00000 |
| 2" | 0.007" | PTFE-Coated Aramid Fiber | Silicone | -100° to 500° | Not Rated | Black | 0000000 | 000000 |
54 ft. | ||||||||
| 1/2" | 0.007" | PTFE-Coated Aramid Fiber | Silicone | -100° to 500° | Not Rated | Black | 0000000 | 00000 |
| 1" | 0.007" | PTFE-Coated Aramid Fiber | Silicone | -100° to 500° | Not Rated | Black | 0000000 | 000000 |
| 2" | 0.007" | PTFE-Coated Aramid Fiber | Silicone | -100° to 500° | Not Rated | Black | 0000000 | 000000 |
Battery Terminal Fasteners
Replace battery terminal hardware.
Use square head bolts with shoulder nuts with battery terminal clamps.