The Screw,shoulder, cataloged under National Stock Number 5305-01-351-0791, 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18 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-351-0791 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.093 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Fastener Length | 0.313 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN |
| Shoulder Length | 0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.123 INCHES MINIMUM AND 0.124 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.125 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | ASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 304 OR STEEL COMP XM-7 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.218 INCHES MINIMUM AND 0.281 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 |
|---|---|
| NASM51575 | 5/1 Secondary reference U.S. Government activity |
| MS51575-2 | 3/2 Design control — primary reference U.S. Government activity |
| NASM21472 | 5/1 Secondary reference U.S. Government activity |
| MS51575-2 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-351-0791 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-370-6955, 5306-01-718-7975. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-01-351-0791: Head Height: 0.093 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN; Fastener Length: 0.313 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN; Shoulder Length: 0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED 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.