The Screw,machine, cataloged under National Stock Number 5305-01-286-7973, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-286-7973 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Screw Surface Treatment | ZINC |
| Fastener Length | 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Thread Length | 1.355 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Document | AS DIFFERENTIATED BY SURFACE TREATMENT |
| Screw Material | STEEL |
| Minimum Tensile Strength | 60000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.340 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | ASTM B633 ASSN STD 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 |
|---|---|
| MS35190-277 | 5/9 Secondary reference U.S. Government activity |
| MS35190-277 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5305-01-286-7973 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-286-7973: Screw Surface Treatment: ZINC; Fastener Length: 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Thread Length: 1.355 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN. 16 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.