The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-317-4010, 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18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-317-4010 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Head Height | 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Fastener Length | 2.219 INCHES MINIMUM AND 2.281 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY 2,CL 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 1.437 INCHES MINIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 1 TYPE |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| Minimum Yield Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.863 INCHES MINIMUM AND 0.875 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 |
|---|---|
| MS35458-75 | 2/2 Government specification standardization U.S. Government activity |
| FF-S-86 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-317-4010 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-317-4010: Width Across Flats: 0.500 INCHES NOMINAL IN; Head Height: 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Fastener Length: 2.219 INCHES MINIMUM AND 2.281 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY 2,CL 3 ASSN STD 2ND 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.