The Screw,shoulder, cataloged under National Stock Number 5305-01-374-4480, 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 17 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 | 5305-01-374-4480 |
| Primary Part Number | 123-6078026 ITEM 26 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.125 INCHES NOMINAL IN |
| Head Height | 0.188 INCHES NOMINAL IN |
| Fastener Length | 2.375 INCHES NOMINAL IN |
| Shoulder Length | 1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.246 INCHES MINIMUM AND 0.248 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.375 INCHES NOMINAL 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 |
|---|---|
| 123-6078026 DETAIL 28-E | Naval Sea Systems Command (USA) |
| 123-6078026 ITEM 26 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-374-4480 is a Screw,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-374-4480 has 2 manufacturer part numbers on file: 123-6078026 DETAIL 28-E (Naval Sea Systems Command), 123-6078026 ITEM 26 (Naval Sea Systems Command).
Key specifications for 123-6078026 ITEM 26: Width Across Flats: 0.125 INCHES NOMINAL IN; Head Height: 0.188 INCHES NOMINAL IN; Fastener Length: 2.375 INCHES NOMINAL IN; Shoulder Length: 1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM FIRST SHOULDER 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.