The Screw,machine, cataloged under National Stock Number 5305-01-372-9435, 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 18 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 | 5305-01-372-9435 |
| Primary Part Number | 6381659 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Bearing Surface of Head Surface Finish | 63.0 MICROINCHES |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.520 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS 5643 COND H1150 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.270 INCHES MINIMUM IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Shank Surface Finish | 63.0 MICROINCHES |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | OVAL |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 630 |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OR ASTM A380-1978 ASSN STD 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 |
|---|---|
| 6381659 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-372-9435 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-372-9435 has 1 manufacturer part number on file: 6381659 (Naval Sea Systems Command).
Key specifications for 6381659: Head Height: 0.125 INCHES NOMINAL IN; Bearing Surface of Head Surface Finish: 63.0 MICROINCHES; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.520 INCHES NOMINAL IN. 18 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.