The Screw,machine, cataloged under National Stock Number 5305-01-198-4664, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Dressta North America Ltd. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5305-01-198-4664 |
| Primary Part Number | 120583 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| Head Height | 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Screw Surface Treatment | ZINC |
| Fastener Length | 0.625 INCHES NOMINAL IN |
| Thread Length | 0.525 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.443 INCHES MINIMUM AND 0.472 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 |
| Part Number | Manufacturer |
|---|---|
| 120583 PRIMARY | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| 120583 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-198-4664 is a Screw,machine, manufactured by Dressta North America Ltd, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-198-4664 has 1 manufacturer part number on file: 120583 (Dressta North America Ltd).
1 possible match (shared part number, not a government interchangeability claim): 2520-01-633-5301. Verify interchangeability with system specifications before substitution.
Key specifications for 120583: Head Height: 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Screw Surface Treatment: ZINC; Fastener Length: 0.625 INCHES NOMINAL IN; Thread Length: 0.525 INCHES MINIMUM AND 0.625 INCHES MAXIMUM 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.