The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-545-6985, 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18 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-545-6985 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.591 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Fastener Length | 2.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | SAE AMS 2700B, 02/01/04 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 2.250 INCHES NOMINAL IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | ASTM F 593-02, GROUP 6, MARTENSITIC ALLOYS ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.995 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205 - NAS-35307. DECEMBER 1999 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 70000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 30000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 8 |
| Material | STEEL COMP 431 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 |
|---|---|
| MS35307-531S316 | 3/2 Design control — primary reference U.S. Government activity |
| MS35307-S316 | 5/9 Secondary reference U.S. Government activity |
| MS35307-5316 | 5/9 Secondary reference U.S. Government activity |
| MS35307-5316 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-545-6985 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-545-6985: Head Height: 0.591 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN; Fastener Length: 2.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: SAE AMS 2700B, 02/01/04 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 2.250 INCHES NOMINAL IN. 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.