The Washer,lock, cataloged under National Stock Number 5310-01-549-5050, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-549-5050 |
| Primary Part Number | 1KP727 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oshkosh 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 |
|---|---|
| 1KP727 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 1KP727 | 3/9 Design control — primary reference Oshkosh Corp |
NSN 5310-01-549-5050 is a Washer,lock, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-549-5050 has 1 manufacturer part number on file: 1KP727 (Oshkosh Defense Llc).
Key specifications for 1KP727: Special Features: 1495-Z IS 1/2 INCH LOCK WASHER ZINC PLATED IN; Part Name Assigned by Controlling Agency: WASHER,LOCK; End Item Identification: 2320-01-465-2176 MK25, 2320-01-465-2182 MK28, 2320-01-465-2189 MK30, 2320-01-530-5692 MK28C. 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.