The Screw,machine, cataloged under National Stock Number 5305-01-371-1771, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-371-1771 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 0.408 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Screw Material Document and Classification | ASTM A493 ASSN STD ALL MATERIAL RESPONSES |
| Thread Length | 0.438 INCHES MAXIMUM IN |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1352 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN |
| Screw Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNRC |
| Head Diameter | 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416 TY 1 CL 2 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 |
| Reference | Meaning |
|---|---|
| FF-S-86 | 4/1 Identification reference U.S. Government activity |
| NAS1352C08-7P | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-371-1771 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-371-1771: Head Height: 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN; Screw Surface Treatment: CADMIUM; Fastener Length: 0.408 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Screw Material Document and Classification: ASTM A493 ASSN STD ALL MATERIAL RESPONSES. 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.