The Setscrew, cataloged under National Stock Number 5305-01-663-8349, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-663-8349 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Point Diameter | 0.156 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Width Across Flats | 0.1562 INCHES MINIMUM AND 0.1582 INCHES MAXIMUM IN |
| Fastener Length | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN |
| Thread Length | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN |
| Material Document and Classification | AMS2700, METHOD 1, CLASS 4 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 80.0 DEGREES MINIMUM AND 90.0 DEGREES MAXIMUM |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CUP |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| NAS1081C5D16 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-663-8349 is a Setscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-663-8349: Point Diameter: 0.156 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Width Across Flats: 0.1562 INCHES MINIMUM AND 0.1582 INCHES MAXIMUM IN; Fastener Length: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN; Thread Length: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN. 15 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.