The Screw,shoulder, cataloged under National Stock Number 5305-01-673-2576, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-673-2576 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.1875 INCHES MINIMUM AND 0.2499 INCHES MAXIMUM IN |
| Fastener Length | 0.7505 INCHES NOMINAL IN |
| Shoulder Length | 0.310 INCHES MINIMUM AND 0.316 INCHES MAXIMUM ALL SHOULDERS IN |
| Surface Treatment Document and Classification | AMS 2700,METHOD 1,CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM ALL SHOULDERS IN |
| Thread Length | 0.4063 INCHES MINIMUM AND 0.4687 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS-51575 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.4688 INCHES MINIMUM AND 0.5312 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 |
|---|---|
| MS51575-28 | 3/9 Design control — primary reference U.S. Government activity |
| MS51575-28 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-673-2576 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-673-2576: Head Height: 0.1875 INCHES MINIMUM AND 0.2499 INCHES MAXIMUM IN; Fastener Length: 0.7505 INCHES NOMINAL IN; Shoulder Length: 0.310 INCHES MINIMUM AND 0.316 INCHES MAXIMUM ALL SHOULDERS IN; Surface Treatment Document and Classification: AMS 2700,METHOD 1,CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.