The Washer,lock, cataloged under National Stock Number 5310-01-566-5584, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Nd Defense Llc. 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 | 5310-01-566-5584 |
| Primary Part Number | 120217 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Nd Defense Llc |
| 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 |
|---|---|
| 120217 PRIMARY | Nd Defense Llc (USA) |
NSN 5310-01-566-5584 is a Washer,lock, manufactured by Nd Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-566-5584 has 1 manufacturer part number on file: 120217 (Nd Defense Llc).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-615-8556. Verify interchangeability with system specifications before substitution.
Key specifications for 120217: Part Name Assigned by Controlling Agency: WASHER,LOCK 10 NOM,STL/ZNC; End Item Identification: MRAP - UNIQUE NSN - USED ON 2 MRAP VARIANTS. 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.