The Screw,machine, cataloged under National Stock Number 5305-01-581-8972, 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17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-581-8972 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Screw Surface Treatment | ALUMINUM |
| Fastener Length | 0.677 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN |
| Thread Length | 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Shank Surface Treatment | ALUMINUM |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Surface Treatment | ALUMINUM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | TITANIUM ALLOY |
| Color | BLACK |
| Internal Drive Style | TORQUE-SET RIBBED |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Reference Number Differentiating Characteristics | ITEM IS FAA CERTIFIED |
| Head Diameter | 0.271 INCHES MINIMUM AND 0.303 INCHES MAXIMUM 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 |
|---|---|
| BACB30NU3K6 | 5/9 Secondary reference U.S. Government activity |
| BACB30VF3K6 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5305-01-581-8972 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-581-8972: Screw Surface Treatment: ALUMINUM; Fastener Length: 0.677 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN; Thread Length: 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN; Shank Surface Treatment: ALUMINUM. 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.