The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-667-6889, 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18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-667-6889 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.094 INCHES NOMINAL IN |
| Head Height | 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS2700, METHOD 1, TYPE 6 OR 7, CLASS 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1351 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 48 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNRF |
| Head Diameter | 0.176 INCHES MINIMUM AND 0.183 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 |
|---|---|
| NAS1351C04LE4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-667-6889 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-667-6889: Width Across Flats: 0.094 INCHES NOMINAL IN; Head Height: 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN; Fastener Length: 0.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS2700, METHOD 1, TYPE 6 OR 7, CLASS 1 ASSN STD 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.