The Screw,machine, cataloged under National Stock Number 5305-01-259-2439, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-259-2439 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN |
| Head Height | 0.082 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| Screw Surface Treatment | CADMIUM AND CHROMATE OR ZINC |
| Fastener Length | 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 6300 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE |
| Extended Washer Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Thread Length | 0.359 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | ROUND EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 4037 OR STEEL COMP 8630 |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B 633-78,TYPE 2 ASSN STD 2ND 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 |
|---|---|
| AN525-832-24 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-01-259-2439 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-259-2439: Extended Washer Thickness: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN; Head Height: 0.082 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN; Screw Surface Treatment: CADMIUM AND CHROMATE OR ZINC; Fastener Length: 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN. 18 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.