The Washer,lock, cataloged under National Stock Number 5310-01-552-3441, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Multiquip Inc. Dba Multiquip Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-552-3441 |
| Primary Part Number | 990400 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Multiquip Inc. Dba Multiquip Inc |
| 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 |
|---|---|
| 990400 PRIMARY | Multiquip Inc. Dba Multiquip Inc (USA) |
NSN 5310-01-552-3441 is a Washer,lock, manufactured by Multiquip Inc. Dba Multiquip Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-552-3441 has 1 manufacturer part number on file: 990400 (Multiquip Inc. Dba Multiquip Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-628-2316. Verify interchangeability with system specifications before substitution.
Key specifications for 990400: Part Name Assigned by Controlling Agency: WASHER LOCK, 1/4"; End Item Identification: AIRFIELD DAMAGE REPAIR KIT, 3895-01-539-0585. 0 specifications are documented in the U.S. Government catalog.
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.