The Screw,machine, cataloged under National Stock Number 5305-01-239-3507, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-239-3507 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.030 INCHES MINIMUM IN |
| Head Height | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Fastener Length | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE |
| Extended Washer Diameter | 0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Thread Length | 0.100 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | DOUBLE HEXAGON W/ HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.188 INCHES NOMINAL IN |
| Screw Material | IRON ALLOY 660 |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Hole Diameter | 0.037 INCHES MINIMUM AND 0.057 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 |
|---|---|
| MS9563-01 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-01-239-3507 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-239-3507: Extended Washer Thickness: 0.030 INCHES MINIMUM IN; Head Height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Fastener Length: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS5731 ASSN STD SINGLE MATERIAL RESPONSE. 19 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.