The Screw,shoulder, cataloged under National Stock Number 5305-00-778-6449, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Mission Systems, Inc.. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-778-6449 |
| Primary Part Number | 81-120295-1REVA |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Dynamics Mission Systems, Inc. |
| Status | ACTIVE |
| Head Height | 0.090 INCHES NOMINAL IN |
| Fastener Length | 0.280 INCHES NOMINAL IN |
| Shoulder Length | 0.073 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.188 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.188 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 72.0 ROCKWELL B MINIMUM AND 80.0 ROCKWELL B MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Yield Strength | 35000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.288 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 |
|---|---|
| 81-120295-1REVA PRIMARY | General Dynamics Mission Systems, Inc. (USA) |
NSN 5305-00-778-6449 is a Screw,shoulder, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-00-778-6449 has 1 manufacturer part number on file: 81-120295-1REVA (General Dynamics Mission Systems, Inc.).
Key specifications for 81-120295-1REVA: Head Height: 0.090 INCHES NOMINAL IN; Fastener Length: 0.280 INCHES NOMINAL IN; Shoulder Length: 0.073 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.188 INCHES NOMINAL FIRST SHOULDER IN. 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.