The Washer,lock, cataloged under National Stock Number 5310-01-560-0890, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Savage Associates Inc Div Petro Chem Technologies. The record lists 6 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-560-0890 |
| Primary Part Number | AK04 15991 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Savage Associates Inc Div Petro Chem Technologies |
| 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 |
|---|---|
| AK04 15991 | Integrated Procurement Technologies (USA) |
| AK04 15991 | Pcx Inc (USA) |
| AK04 15991 | Echelon Supply and Service, Inc. (USA) |
| AK04 15991 | Robert J Fitzmyer Co Inc Dba Robert J Fitzmyer Co Inc (USA) |
| AK04 15991 PRIMARY | Savage Associates Inc Div Petro Chem Technologies (USA) |
| AK04 15991 | The Gorman-Rupp Company Div Gorman-Rupp (USA) |
| Reference | Meaning |
|---|---|
| AK04 | 5/9 Secondary reference The Gorman-Rupp Company Div Gorman-Rupp |
NSN 5310-01-560-0890 is a Washer,lock, manufactured by Savage Associates Inc Div Petro Chem Technologies, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-560-0890 has 6 manufacturer part numbers on file: AK04 15991 (Integrated Procurement Technologies), AK04 15991 (Pcx Inc), AK04 15991 (Echelon Supply and Service, Inc.), AK04 15991 (Robert J Fitzmyer Co Inc Dba Robert J Fitzmyer Co Inc), AK04 15991 (Savage Associates Inc Div Petro Chem Technologies) and 1 more.
Key specifications for AK04 15991: Part Name Assigned by Controlling Agency: T-TYPE LOCK WASHER; End Item Identification: 4320-01-533-6418;600 GPM PUMP ASSEMBLY,WATER. 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.