The Setscrew, cataloged under National Stock Number 5305-01-231-5835, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-231-5835 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.126 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN |
| Fastener Length | 0.285 INCHES NOMINAL IN |
| Thread Length | 0.285 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | FULL DOG |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 2961C52-1 | 3/1 Design control — primary reference U.S. Government activity |
| 2960C25 | 5/1 Secondary reference U.S. Government activity |
NSN 5305-01-231-5835 is a Setscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-231-5835: Width Across Flats: 0.126 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN; Fastener Length: 0.285 INCHES NOMINAL IN; Thread Length: 0.285 INCHES NOMINAL IN; Criticality Code Justification: ZZZY. 14 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.