| NAVAL SHIP SYSTEMS COMMAND | 80064 |
| THREAD CLASS | 3A |
| THREAD LENGTH | 0.750 INCHES NOMINAL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD SERIES DESIGNATOR | UNC |
| An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE. |
