The Screw,shoulder, cataloged under National Stock Number 5305-01-560-5505, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-560-5505 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Height | 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN |
| Fastener Length | 1.375 INCHES NOMINAL IN |
| Shoulder Length | 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM OVERALL IN |
| Shoulder Diameter | 0.498 INCHES MINIMUM AND 0.499 INCHES MAXIMUM OVERALL IN |
| Thread Length | 0.593 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.718 INCHES MINIMUM AND 0.781 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 |
|---|---|
| MS51576-38 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-01-560-5505 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-560-5505: Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN; Fastener Length: 1.375 INCHES NOMINAL IN; Shoulder Length: 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM OVERALL IN. 17 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.