The Setscrew, cataloged under National Stock Number 5305-00-421-3571, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-421-3571 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Point Diameter | 0.135 INCHES NOMINAL IN |
| Point Length | 0.187 INCHES NOMINAL IN |
| Fastener Length | 0.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | 20 FSCM 23610 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.438 INCHES MAXIMUM IN |
| Material Document and Classification | LEDLOY FSCM 23610 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 30.0 DEGREES NOMINAL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Features Provided | CASEHARDENED |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CHAMFER DOG |
| Surface Treatment | NICKEL OVERALL |
| Internal Drive Style | SLOT |
| Thread Quantity Per Inch | 32 |
| Material | STEEL 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 |
| Reference | Meaning |
|---|---|
| 1091033 | 3/9 Design control — primary reference H & E Venture, Llc |
NSN 5305-00-421-3571 is a Setscrew, classified under FSC 5305, Screws. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4720-01-694-6392. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-00-421-3571: Point Diameter: 0.135 INCHES NOMINAL IN; Point Length: 0.187 INCHES NOMINAL IN; Fastener Length: 0.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: 20 FSCM 23610 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 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.