The Washer,flat, cataloged under National Stock Number 5310-01-660-5023, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Birdon Pty Ltd. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Birdon Pty Ltd (CAGE Z0PP1) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-660-5023 |
| Primary Part Number | 5018 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Birdon Pty Ltd |
| 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 |
|---|---|
| 5018 | Birdon Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| DA6132U-S1-1 | D/9 Drawing number reference only U.S. Government activity |
| 5018 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-660-5023 is a Washer,flat, manufactured by Birdon Pty Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-660-5023 has 1 manufacturer part number on file: 5018 (Birdon Pty Ltd).
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.