The Washer,lock, cataloged under National Stock Number 5310-01-421-0473, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fm Af, Llc Dba American Fan Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Fm Af, Llc Dba American Fan Company (CAGE 75477) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-421-0473 |
| Primary Part Number | B60137-3 ITEM 32 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| 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 |
|---|---|
| B60137-3 ITEM 32 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| B400-655-008 | 5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
| B400-655-008 | C/1 Advisory reference — outside the item-of-supply concept Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| B60137-3 ITEM 32 | 5/9 Secondary reference Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| B400-655-008 | C/1 Advisory reference — outside the item-of-supply concept Fm Af, Llc Dba American Fan Company |
NSN 5310-01-421-0473 is a Washer,lock, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-421-0473 has 1 manufacturer part number on file: B60137-3 ITEM 32 (Fm Af, Llc Dba American Fan Company).
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.