The Screw,machine, cataloged under National Stock Number 5305-01-581-1893, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Screw,machine |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Boeing Defence Australia Ltd (CAGE Z0HA9) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-581-1893 |
| Primary Part Number | NAS1801-4-450 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Boeing Defence Australia Ltd |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| 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 |
|---|---|
| NAS1801-4-450 | Boeing Defence Australia Ltd (AUS) |
| Reference | Meaning |
|---|---|
| NAS1801-4-450 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-581-1893 is a Screw,machine, manufactured by Boeing Defence Australia Ltd, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-581-1893 has 1 manufacturer part number on file: NAS1801-4-450 (Boeing Defence Australia Ltd).
Key specifications for NAS1801-4-450: Thread Direction: RIGHT-HAND; Special Features: HEX HEAD, CRUCIFORM RECESS, FULL THREAD, ALLOY STEEL, 160 KSI FTU, THREAD SIZE .2500-28, UNJF-3A A; Part Name Assigned by Controlling Agency: SCREW, HEX HEAD. 1 specification is 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.