The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-731-1237, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-731-1237 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Head Height | 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Fastener Length | 4.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Thread Length | 2.000 INCHES NOMINAL IN |
| Material Document and Classification | UNABLE TO DECODE |
| Nominal Thread Diameter | 0.7500 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1352 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | UNABLE TO DECODE |
| Surface Treatment | UNABLE TO DECODE |
| Chamfer Angle | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 10 |
| Material | UNABLE TO DECODE |
| Thread Series Designator | UNRC |
| Head Diameter | 1.107 INCHES MINIMUM AND 1.125 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 |
|---|---|
| NAS1352C12LE64 | 3/2 Design control — primary reference U.S. Government activity |
| 68-05-6400 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| ERH832-0380A355-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-731-1237 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-731-1237: Width Across Flats: 0.625 INCHES NOMINAL IN; Head Height: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Fastener Length: 4.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: UNABLE TO DECODE. 19 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.