Grade and Material (Nuts)
| ID Grade Mark | Specification | Part Description | Material | Nom Size Range | Yield (min psi) | Tensile (min psi) | Proof Load (psi) |
|---|
| No Grade Mark | SAE J995 Grade 2 | Hot or Cold Forged Nut | Carbon Steel | ¼ and Larger | | | 90,000 |
 | SAE J995 Grade 5 | Hot or Cold Forged Nuts | Carbon Steel | ¼ and Larger | | | 120,000 (UNC)109,000 (UNF) |
 | SAE J995 Grade 8 | Hot or Cold Forged Nuts | Carbon SteelQuenched and Tempered | ¼ and Larger | | | 150,000 |
| 2H | ASTM A194 | Hot or Cold Forged Nuts for High Pressure and High Temperature Service | Medium Carbon SteelQuenched and Tempered | ¼ and Larger | | | 175,000 |
| 4 | ASTM A194 | Hot or Cold Forged Nuts for High Pressure and High Temperature Service | Medium Carbon Alloy Steel Quenched and Tempered | ¼ and Larger | | | 175,000 |
| 7 | ASTM A194 | Hot or Cold Forged Nuts for High Pressure and High Temperature Service | Medium Carbon Alloy Steel Quenched and Tempered | ¼ and Larger | | | 175,000 |
| 8 | ASTM A194 | Hot or Cold Forged Nuts for High Pressure and High Temperature Service | AISI 304 | ¼ and Larger | | | 80,00075,000 |
| 8M | ASTM A194 | Hot or Cold Forged Nuts for High Pressure and High Temperature Service | AISI 316 | ¼ and Larger | | | 80,00075.000 |
| 8T | ASTM A194 | Hot or Cold Forged Nuts for High Pressure and High Temperature Service | AISI 321 | ¼ and Larger | | | 80,00075.000 |