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| Unit System | Inch |
| Part Type | Screw |
| Description | Screw, Hex Head |
| Thread Size | 0.3125-18 UNC-2A |
| Thread Size Nom. | 5/16-18 |
| Length | 1.0000 |
| Material | 18-8 Stainless Steel |
| Finish | Silver Plated |
| Vented | Non-Vented |
| D | 0.313 |
| F | 0.500 |
| G | 0.492 |
| H | 0.707 |
| Source Specification | ASME B18.2.1 |