The Washer,lock, cataloged under National Stock Number 5310-01-178-1969, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Honeywell Ltdaerospace Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Honeywell Ltdaerospace Div (CAGE 09708) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-178-1969 |
| Primary Part Number | 212923 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell Ltdaerospace Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 212923 PRIMARY | Honeywell Ltdaerospace Div (CAN) |
| Reference | Meaning |
|---|---|
| 212923 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5310-01-178-1969 is a Washer,lock, manufactured by Honeywell Ltdaerospace Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-178-1969 has 1 manufacturer part number on file: 212923 (Honeywell Ltdaerospace Div).
1 possible match (shared part number, not a government interchangeability claim): 6105-01-481-7072. Verify interchangeability with system specifications before substitution.
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.