The Screw,machine, cataloged under National Stock Number 5305-01-520-5056, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-520-5056 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 1.594 INCHES NOMINAL IN |
| Screw Material Document and Classification | MIL-S-8049 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-8050 MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.531 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | CROSS RECESS TYPE II |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNF |
| Head Diameter | 0.491 INCHES MINIMUM AND 0.507 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 |
|---|---|
| MS24694-112 | 5/9 Secondary reference U.S. Government activity |
| NASM24694 | 5/1 Secondary reference U.S. Government activity |
| MS24694-112 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-520-5056 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-520-5063. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-01-520-5056: Fastener Length: 1.594 INCHES NOMINAL IN; Screw Material Document and Classification: MIL-S-8049 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-8050 MIL SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.531 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 13 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.