The Screw,shoulder, cataloged under National Stock Number 5305-00-281-3405, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 17 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 | 5305-00-281-3405 |
| Primary Part Number | 139C6468-6 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Head Height | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Fastener Length | 0.860 INCHES MINIMUM AND 0.900 INCHES MAXIMUM IN |
| Shoulder Length | 0.500 INCHES MINIMUM AND 0.540 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.252 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MINIMUM OVERALL |
| Material Document and Classification | QQ-S-624 COLD FINISH TYPE 4140 OR 41L40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.370 INCHES MINIMUM AND 0.380 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 |
|---|---|
| 139C6468-6 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
NSN 5305-00-281-3405 is a Screw,shoulder, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-281-3405 has 1 manufacturer part number on file: 139C6468-6 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
Key specifications for 139C6468-6: Head Height: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Fastener Length: 0.860 INCHES MINIMUM AND 0.900 INCHES MAXIMUM IN; Shoulder Length: 0.500 INCHES MINIMUM AND 0.540 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.499 INCHES MINIMUM AND 0.500 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.