The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-479-9237, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-479-9237 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 2.750 INCHES MAXIMUM IN |
| Material Document and Classification | ASTMA574 ASSN STD 1ST MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PELLET OR STRIP THREADS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL COMP 4340 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 |
|---|---|
| MIL-DTL-1222 | 4/1 Identification reference U.S. Government activity |
| 0.50013UNC3A2.750T2G4340SEB | 5/9 Secondary reference U.S. Government activity |
| M1222SN8C328GJLN | 2/2 Government specification standardization U.S. Government activity |
| MIL-S-1222 | 5/9 Secondary reference U.S. Government activity |
| 000150582-003 | 5/1 Secondary reference Waukesha Bearings Corporation |
NSN 5305-01-479-9237 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-479-9237: Fastener Length: 2.750 INCHES MAXIMUM IN; Material Document and Classification: ASTMA574 ASSN STD 1ST MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.500 INCHES IN; Head Style: HEXAGON. 10 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.