The Screw,machine, cataloged under National Stock Number 5305-01-331-7930, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-331-7930 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.088 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Bearing Surface of Head Surface Finish | 32.0 MICROINCHES |
| Screw Surface Treatment | CADMIUM AND CHROMATE |
| Fastener Length | 0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Screw Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE |
| Thread Length | 0.782 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Shank Surface Finish | 32.0 MICROINCHES |
| Locking Feature Material | PLASTIC POLYAMIDE NYLON |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Thread Surface Finish | 32.0 MICROINCHES |
| Specification/standard Data | 80205-NAS1191 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | PATCH |
| Screw Material | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740 |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNJC |
| Head Diameter | 0.265 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 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 |
|---|---|
| NAS1191-08P14HB | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-331-7930 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-331-7930: Head Height: 0.088 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN; Bearing Surface of Head Surface Finish: 32.0 MICROINCHES; Screw Surface Treatment: CADMIUM AND CHROMATE; Fastener Length: 0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN. 22 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.