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Stainless Steel Hex Screw and Nut Kits for Pipe Flanges
Join standard-sized stainless steel and aluminum pipe flanges in corrosive conditions. These kits come with the right size and number of screws and nuts for the bolt holes in each pipe size. For a tight seal, you’ll also need a gasket between the flanges. All screws and nuts meet ASTM and ASME standards or DIN standards for material quality and dimensions. They may be mildly magnetic. Screw length is measured from under the head.
316 stainless steel fasteners are more corrosion resistant than 18-8 stainless steel fasteners and have excellent resistance to chemicals and salt water.
Kits with blue PTFE-coated nuts thread together with the screws smoothly thanks to the slippery coating on the nut. The coating also resists chemicals, so it doesn't compromise their corrosion resistance.
Screw | Nut | 316 Stainless Steel with Blue PTFE-Coated Nuts | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Pipe Size  | Lg. | Min. Thread Lg. | Head Wd. | Head Ht. | Tensile Strength, psi | Wd. | Ht. | No. of Screws Included | No. of Nuts Included | Each | |
1/2"-13 | |||||||||||
| 1/2, 3/4 | 2" | 1 1/4" | 3/4" | 11/32" | 80,000 | 3/4" | 7/16" | 4 | 4 | 000000000 | 000000 |
| 1, 1 1/4 | 2 1/4" | 1 1/4" | 3/4" | 11/32" | 80,000 | 3/4" | 7/16" | 4 | 4 | 000000000 | 00000 |
| 1 1/2 | 2 1/2" | 1 1/4" | 3/4" | 11/32" | 80,000 | 3/4" | 7/16" | 4 | 4 | 000000000 | 00000 |
5/8"-11 | |||||||||||
| 2 | 2 3/4" | 1 1/2" | 15/16" | 27/64" | 80,000 | 15/16" | 35/64" | 4 | 4 | 000000000 | 00000 |
| 2 1/2, 3 | 3" | 1 1/2" | 15/16" | 27/64" | 80,000 | 15/16" | 35/64" | 4 | 4 | 000000000 | 00000 |
| 4 | 3" | 1 1/2" | 15/16" | 27/64" | 80,000 | 15/16" | 35/64" | 8 | 8 | 000000000 | 00000 |
3/4"-10 | |||||||||||
| 6 | 3 1/4" | 1 3/4" | 1 1/8" | 1/2" | 80,000 | 1 1/8" | 41/64" | 8 | 8 | 000000000 | 00000 |
| 8 | 3 1/2" | 1 3/4" | 1 1/8" | 1/2" | 80,000 | 1 1/8" | 41/64" | 8 | 8 | 000000000 | 00000 |
7/8"-9 | |||||||||||
| 10, 12 | 4" | 2" | 1 5/16" | 37/64" | 80,000 | 1 5/16" | 3/4" | 12 | 12 | 000000000 | 000000 |
Screw | Nut | 316 Stainless Steel with Blue PTFE-Coated Nuts | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Pipe Size | Lg. | Min. Thread Lg. | Head Wd. | Head Ht. | Tensile Strength, psi | Wd. | Ht. | No. of Screws Included | No. of Nuts Included | Each | |
1/2"-13 | |||||||||||
| 1/2 | 2 1/4" | 1 1/4" | 3/4" | 11/32" | 80,000 | 3/4" | 7/16" | 4 | 4 | 000000000 | 000000 |
5/8"-11 | |||||||||||
| 3/4, 1 | 2 1/2" | 1 1/2" | 15/16" | 27/64" | 80,000 | 15/16" | 35/64" | 4 | 4 | 000000000 | 00000 |
| 1 1/4 | 2 3/4" | 1 1/2" | 15/16" | 27/64" | 80,000 | 15/16" | 35/64" | 4 | 4 | 000000000 | 00000 |
| 2 | 3" | 1 1/2" | 15/16" | 27/64" | 80,000 | 15/16" | 35/64" | 8 | 8 | 000000000 | 00000 |
3/4"-10 | |||||||||||
| 1 1/2 | 3" | 1 3/4" | 1 1/8" | 1/2" | 80,000 | 1 1/8" | 41/64" | 4 | 4 | 000000000 | 00000 |
| 3 1/2, 4 | 3 3/4" | 1 3/4" | 1 1/8" | 1/2" | 80,000 | 1 1/8" | 41/64" | 8 | 8 | 000000000 | 000000 |