The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-280-5664, 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18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-280-5664 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN |
| Head Height | 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.160 INCHES NOMINAL IN |
| First Diameter From Head | 0.114 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.340 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 432R706H02 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-280-5664 is a Screw,externally Relieved Body, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-280-5664: Width Across Flats: 0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN; Head Height: 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN; Fastener Length: 0.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.