The Screw,machine, cataloged under National Stock Number 5305-01-629-3908, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-629-3908 |
| Primary Part Number | 721-8217295-35 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.365 INCHES NOMINAL IN |
| Fastener Length | 0.635 INCHES NOMINAL IN |
| Thread Length | 0.510 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.500 INCHES NOMINAL IN |
| Screw Material | COPPER ALLOY |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 721-8217295-35 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H861-8000-35 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-629-3908 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-629-3908 has 1 manufacturer part number on file: 721-8217295-35 (Naval Sea Systems Command).
Key specifications for 721-8217295-35: Head Height: 0.365 INCHES NOMINAL IN; Fastener Length: 0.635 INCHES NOMINAL IN; Thread Length: 0.510 INCHES NOMINAL IN; Nominal Thread Diameter: 0.375 INCHES IN. 10 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.