The Setscrew, cataloged under National Stock Number 5305-01-488-6978, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-488-6978 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Point Diameter | 0.456 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| Head Height | 0.452 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN |
| Point Length | 0.156 INCHES NOMINAL IN |
| Fastener Length | 3.000 INCHES NOMINAL IN |
| Material Document and Classification | FF-S-210 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 35.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Point Style | HALF DOG |
| Width Between Flats | 0.606 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 522C682095 | 3/2 Design control — primary reference U.S. Government activity |
| 6510E68FN35 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-488-6978 is a Setscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-488-6978: Point Diameter: 0.456 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN; Head Height: 0.452 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN; Point Length: 0.156 INCHES NOMINAL IN; Fastener Length: 3.000 INCHES NOMINAL 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.