The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-300-2073, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-300-2073 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.640 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN |
| Fastener Length | 4.706 INCHES MINIMUM AND 4.736 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-S-5002 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.846 INCHES NOMINAL IN |
| Material Document and Classification | AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1020 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 1.801 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| NAS1020-46A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-300-2073 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-300-2073: Head Height: 0.640 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN; Fastener Length: 4.706 INCHES MINIMUM AND 4.736 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-S-5002 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 1.846 INCHES NOMINAL IN. 16 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.