The Setscrew, cataloged under National Stock Number 5305-00-285-1407, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 12 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-285-1407 |
| Primary Part Number | 540903 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Fastener Length | 0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Thread Length | 0.188 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-B-626,COMP 22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.073 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 72 |
| Material | COPPER ALLOY 360 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 540903 | Army Weapons Command Attn Amswe-Ree-S (USA) |
NSN 5305-00-285-1407 is a Setscrew, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-285-1407 has 1 manufacturer part number on file: 540903 (Army Weapons Command Attn Amswe-Ree-S).
2 possible matches (shared part number, not a government interchangeability claim): 5342-00-927-9970, 3655-01-220-1545. Verify interchangeability with system specifications before substitution.
Key specifications for 540903: Fastener Length: 0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Thread Length: 0.188 INCHES MAXIMUM IN; Material Document and Classification: QQ-B-626,COMP 22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.073 INCHES IN. 12 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.