The Washer,flat, cataloged under National Stock Number 5310-01-153-8945, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Highland Engineering, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Highland Engineering, Inc. (CAGE 0AK83) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-153-8945 |
| Primary Part Number | 104-1-012-1-2-6-0 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Highland Engineering, 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 |
|---|---|
| 104-1-012-1-2-6-0 PRIMARY | Highland Engineering, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 22-351-2 | 5/9 Secondary reference Uop Inc Fluid Systems Div |
NSN 5310-01-153-8945 is a Washer,flat, manufactured by Highland Engineering, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-153-8945 has 1 manufacturer part number on file: 104-1-012-1-2-6-0 (Highland Engineering, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-202-7839, 5325-01-617-9461. 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.