The Screw,shoulder, cataloged under National Stock Number 5305-01-470-9303, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-470-9303 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Head Height | 0.1875 INCHES MINIMUM AND 0.2499 INCHES MAXIMUM IN |
| Fastener Length | 1.4063 INCHES MINIMUM AND 1.4687 INCHES MAXIMUM IN |
| Shoulder Length | 0.997 INCHES MINIMUM AND 1.003 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35,TYPE II, TYPE VI OR VII FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.4063 INCHES MINIMUM AND 0.4687 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | ASTM A582/582M ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A493 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 96906-MIL-S-51576 GOVERNMENT SPECIFICATION |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP XM-7 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 |
|---|---|
| 167-8278261 PC 7 | 5/1 Secondary reference Naval Sea Systems Command |
| MS51576 | 4/1 Identification reference U.S. Government activity |
| MS51576-29 | 2/2 Government specification standardization U.S. Government activity |
| 167-8278260 PC 6 | 5/1 Secondary reference Naval Sea Systems Command |
| 90298A583 | C/1 Advisory reference — outside the item-of-supply concept Mcmaster-Carr Supply Co |
NSN 5305-01-470-9303 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-470-9303: Width Across Flats: 0.156 INCHES NOMINAL IN; Head Height: 0.1875 INCHES MINIMUM AND 0.2499 INCHES MAXIMUM IN; Fastener Length: 1.4063 INCHES MINIMUM AND 1.4687 INCHES MAXIMUM IN; Shoulder Length: 0.997 INCHES MINIMUM AND 1.003 INCHES MAXIMUM FIRST SHOULDER IN. 20 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.