The Screw,shoulder, cataloged under National Stock Number 5305-01-658-4153, 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17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-658-4153 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.188 INCHES NOMINAL IN |
| Head Height | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Shoulder Length | 0.500 INCHES NOMINAL OVERALL IN |
| Shoulder Diameter | 0.3710 INCHES MINIMUM AND 0.3730 INCHES MAXIMUM OVERALL IN |
| Thread Length | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | NASM 51975 NATIONAL STD/SPEC |
| Surface Treatment | CADMIUM OVERALL |
| Chamfer Angle | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.543 INCHES MINIMUM AND 0.562 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 |
|---|---|
| MS51975-16P | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-658-4153 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-658-4153: Width Across Flats: 0.188 INCHES NOMINAL IN; Head Height: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Shoulder Length: 0.500 INCHES NOMINAL OVERALL IN; Shoulder Diameter: 0.3710 INCHES MINIMUM AND 0.3730 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.