The Screw,shoulder, cataloged under National Stock Number 5305-01-651-2855, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mission Systems Davenport Inc.. Government technical data includes 16 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 | 5305-01-651-2855 |
| Primary Part Number | 405397-1 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mission Systems Davenport Inc. |
| Status | ACTIVE |
| Head Height | 0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Fastener Length | 0.418 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ASTM-A967 ASSN STD ALL TREATMENT RESPONSES OVERALL |
| Thread Length | 0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5643 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.1380 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Chamfer Angle | 20.0 DEGREES NOMINAL |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.258 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 |
|---|---|
| 405397-1 PRIMARY | Mission Systems Davenport Inc. (USA) |
NSN 5305-01-651-2855 is a Screw,shoulder, manufactured by Mission Systems Davenport Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-651-2855 has 1 manufacturer part number on file: 405397-1 (Mission Systems Davenport Inc.).
Key specifications for 405397-1: Head Height: 0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN; Fastener Length: 0.418 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN; Surface Treatment Document and Classification: ASTM-A967 ASSN STD ALL TREATMENT RESPONSES OVERALL; Thread Length: 0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN. 16 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.