The Screw,machine, cataloged under National Stock Number 5305-01-472-4523, 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15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-472-4523 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.734 INCHES MINIMUM AND 0.782 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Screw Material | IRON ALLOY 660 |
| Internal Drive Style | HIGH-TORQUE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.477 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| NAS1218-4E5 | 5/9 Secondary reference Refa International Inc. |
| NAS1218-4E5 | 5/9 Secondary reference U.S. Government activity |
| NAS1578C4-5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-472-4523 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-472-4523: Head Height: 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.734 INCHES MINIMUM AND 0.782 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE. 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.