The Washer,lock, cataloged under National Stock Number 5310-01-178-1601, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Astronics Test Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Washer,lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Astronics Test Systems Inc (CAGE 21793) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-178-1601 |
| Primary Part Number | 617125 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Astronics Test Systems 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 |
|---|---|
| 617125 PRIMARY | Astronics Test Systems Inc (USA) |
NSN 5310-01-178-1601 is a Washer,lock, manufactured by Astronics Test Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-178-1601 has 1 manufacturer part number on file: 617125 (Astronics Test Systems Inc).
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.