The Washer,flat, cataloged under National Stock Number 5310-01-281-9129, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Woodward, Inc. Div Fuel Systems and Controls (CAGE 66503) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-281-9129 |
| Primary Part Number | 186173 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 186173 PRIMARY | Woodward, Inc. Div Fuel Systems and Controls (USA) |
| Reference | Meaning |
|---|---|
| 186173 | 3/9 Design control — primary reference Woodward, Inc. |
NSN 5310-01-281-9129 is a Washer,flat, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-281-9129 has 1 manufacturer part number on file: 186173 (Woodward, Inc. Div Fuel Systems and Controls).
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.