The Washer,back Up, cataloged under National Stock Number 5310-00-180-8103, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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,back Up |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-180-8103 |
| Item Name | Washer,back Up |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Reference | Meaning |
|---|---|
| 515283-9 | 1/2 Source control — Government-approved source U.S. Government activity |
| 0763430200 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-180-8103 is a Washer,back Up, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5315-00-515-2839. 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.