The Screw,machine, cataloged under National Stock Number 5305-01-581-0639, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Isuzu Diesel of North America. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Screw,machine |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Isuzu Diesel of North America (CAGE 4N530); Mack Boring & Parts Co (CAGE 29186) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-581-0639 |
| Primary Part Number | 903910-4080 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Isuzu Diesel of North America |
| Status | ACTIVE |
| 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 |
|---|---|
| 903910-4080 PRIMARY | Isuzu Diesel of North America (USA) |
| 903910-4080 | Mack Boring & Parts Co (USA) |
| Reference | Meaning |
|---|---|
| 1004924 | D/9 Drawing number reference only Dhs Systems Llc |
NSN 5305-01-581-0639 is a Screw,machine, manufactured by Isuzu Diesel of North America, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-581-0639 has 2 manufacturer part numbers on file: 903910-4080 (Isuzu Diesel of North America), 903910-4080 (Mack Boring & Parts Co).
1 possible match (shared part number, not a government interchangeability claim): 6130-01-581-4348. Verify interchangeability with system specifications before substitution.
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.