The Screw,machine, cataloged under National Stock Number 5305-01-485-7971, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-485-7971 |
| Primary Part Number | 122-7312139 PC 5 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Screw Surface Treatment | CERAMIC |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Screw Material Document and Classification | FF-S-86, TYPE IV FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Screw Surface Treatment Document and Classification | FF-S-86 FED SPEC SINGLE TREATMENT RESPONSE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 122-7312139 PC 5 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-485-7971 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-485-7971 has 1 manufacturer part number on file: 122-7312139 PC 5 (Naval Sea Systems Command).
Key specifications for 122-7312139 PC 5: Screw Surface Treatment: CERAMIC; Fastener Length: 0.750 INCHES NOMINAL IN; Screw Material Document and Classification: FF-S-86, TYPE IV FED SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.750 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.