The Screw,machine, cataloged under National Stock Number 5305-00-298-8570, 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17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-298-8570 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.049 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Fastener Length | 0.146 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Screw Material Document and Classification | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.127 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Surface Treatment | ENAMEL |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Designator | AS MODIFIED BY FASTENER LENGTH |
| Width Between Flats | 0.181 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 10S STYLE |
| Screw Material | COPPER ALLOY |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| 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 |
|---|---|
| FFS92TYPE1STYLE10S | 4/1 Identification reference U.S. Government activity |
NSN 5305-00-298-8570 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-298-8570: Head Height: 0.049 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Fastener Length: 0.146 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN; Screw Material Document and Classification: QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.127 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN. 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.