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System of Measurement System of Measurement |
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Material Material |
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Drive Style Drive Style |
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Threading Threading |
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Rounded Head Style Rounded Head Style |
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Thread Direction Thread Direction |
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Hardness Hardness |
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Tensile Strength Tensile Strength |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Threaded Studs and Rods
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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
PTFE Coated
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
Stainless Steel with Blue PTFE-Coated Nuts
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
PTFE Coated
Undercut Profile
Standard Profile
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 |
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.
Blue PTFE-Coated Steel
| 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 |