The Screw,shoulder, cataloged under National Stock Number 5305-01-443-7474, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-443-7474 |
| Primary Part Number | 563-6404329-60 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Height | 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Fastener Length | 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Shoulder Length | 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.595 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.729 INCHES MINIMUM AND 0.750 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 |
| Part Number | Manufacturer |
|---|---|
| 563-6404329-60 PRIMARY | Naval Sea Systems Command (USA) |
| 563-6404329-60 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 5305-01-443-7474 is a Screw,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-443-7474 has 2 manufacturer part numbers on file: 563-6404329-60 (Naval Sea Systems Command), 563-6404329-60 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 563-6404329-60: Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Fastener Length: 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN; Shoulder Length: 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM FIRST SHOULDER IN. 19 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.