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18-8 Stainless Steel Extra-Wide Hex
Nuts for High-Pressure Applications
These nuts have good chemical resistance and may be mildly magnetic. They 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.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 1/4"-20 | 1/2" | 15/64" | ASTM A194 | 25 | 000000000 | 000000 |
| 1/4"-28 | 1/2" | 15/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 5/16"-18 | 9/16" | 19/64" | ASTM A194 | 10 | 000000000 | 0000 |
| 5/16"-24 | 9/16" | 19/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 3/8"-16 | 11/16" | 23/64" | ASTM A194 | 10 | 000000000 | 0000 |
| 3/8"-24 | 11/16" | 23/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 7/16"-14 | 3/4" | 27/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 7/16"-20 | 3/4" | 27/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 1/2"-13 | 7/8" | 31/64" | ASTM A194 | 10 | 000000000 | 00000 |
| 1/2"-20 | 7/8" | 31/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 5/8"-11 | 1 1/16" | 39/64" | ASTM A194 | 5 | 000000000 | 00000 |
| 5/8"-18 | 1 1/16" | 39/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 3/4"-10 | 1 1/4" | 47/64" | ASTM A194 | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/4" | 47/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 7/8"-9 | 1 7/16" | 55/64" | ASTM A194 | 1 | 000000000 | 0000 |
| 1"-8 | 1 5/8" | 63/64" | ASTM A194 | 1 | 000000000 | 0000 |
| 1"-14 | 1 5/8" | 63/64" | ASTM A194 | 1 | 000000000 | 00000 |
| 1 1/8"-7 | 1 13/16" | 1 7/64" | ASTM A194 | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 2" | 1 7/32" | ASTM A194 | 1 | 000000000 | 0000 |