The Setscrew, cataloged under National Stock Number 5305-00-784-8644, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-784-8644 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Point Diameter | 0.146 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Head Height | 0.156 INCHES NOMINAL IN |
| Point Length | 0.298 INCHES NOMINAL IN |
| Fastener Length | 0.480 INCHES NOMINAL IN |
| Thread Length | 0.182 INCHES NOMINAL IN |
| Hole Configuration Style | ROUND |
| Material Document and Classification | MIL-S-6050 COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Point Style | DOG |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.047 INCHES NOMINAL IN |
| Head Diameter | 0.300 INCHES NOMINAL IN |
| 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 |
|---|---|
| 728064-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-784-8644 is a Setscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-784-8644: Point Diameter: 0.146 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN; Head Height: 0.156 INCHES NOMINAL IN; Point Length: 0.298 INCHES NOMINAL IN; Fastener Length: 0.480 INCHES NOMINAL IN. 20 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.