The Washer,flat, cataloged under National Stock Number 5310-01-415-1606, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Unac (CAGE F8357); Westrac Equipment Pty Ltd (CAGE Z02C9); Hastings Deering (aust) Pty Ltd (CAGE ZF912); William Adams Pty Ltd (CAGE Z2ZA9); Caterpillar Inc Div Caterpillar Defense (CAGE 11083) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-415-1606 |
| Primary Part Number | 9X-8256 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| 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 |
|---|---|
| A03155A | Unac (FRA) |
| 9X-8256 | Westrac Equipment Pty Ltd (AUS) |
| 9X-8256 | Hastings Deering (aust) Pty Ltd (AUS) |
| 9X-8256 | William Adams Pty Ltd (AUS) |
| 9X-8256 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 9X-8256 | Finning (uk) Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 8HA337 | 5/9 Secondary reference Oshkosh Truck Uk Ltd |
NSN 5310-01-415-1606 is a Washer,flat, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-415-1606 has 6 manufacturer part numbers on file: A03155A (Unac), 9X-8256 (Westrac Equipment Pty Ltd), 9X-8256 (Hastings Deering (aust) Pty Ltd), 9X-8256 (William Adams Pty Ltd), 9X-8256 (Caterpillar Inc Div Caterpillar Defense) and 1 more.
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.