The Washer,seal, cataloged under National Stock Number 5310-01-424-7925, 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 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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,seal |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Fm Af, Llc Dba American Fan Company (CAGE 75477); Howden American Fan Company Dba American Fan Co Div Howden Usa Company (CAGE 53555) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-424-7925 |
| Primary Part Number | B4W-33551-2 |
| Item Name | Washer,seal |
| 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 |
|---|---|
| B60457 REV A ITEM 37 | Fm Af, Llc Dba American Fan Company (USA) |
| B4W-33551-2 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| B4W-33551-2 PRIMARY | Howden American Fan Company Dba American Fan Co Div Howden Usa Company (USA) |
| Reference | Meaning |
|---|---|
| B4W-33551-2 | 5/9 Secondary reference Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| B60457 REV A ITEM 37 | 5/9 Secondary reference Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
NSN 5310-01-424-7925 is a Washer,seal, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-424-7925 has 3 manufacturer part numbers on file: B60457 REV A ITEM 37 (Fm Af, Llc Dba American Fan Company), B4W-33551-2 (Fm Af, Llc Dba American Fan Company), B4W-33551-2 (Howden American Fan Company Dba American Fan Co Div Howden Usa 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.