The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-674-6951, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-674-6951 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Head Height | 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM F1941,TYPE 3A ASSN STD SINGLE TREATMENT RESPONSE OVERALL A |
| Extended Washer Diameter | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Material Document and Classification | SAE J429 GRADE 8 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 05047-ASME B18.24-2015 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| 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 |
| Reference | Meaning |
|---|---|
| AESA0C250750WA6D76 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 5305-01-674-6951 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-674-6951: Extended Washer Thickness: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN; Head Height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Fastener Length: 0.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM F1941,TYPE 3A ASSN STD SINGLE TREATMENT RESPONSE OVERALL A. 17 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.