The Washer,flat, cataloged under National Stock Number 5310-01-513-9156, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Portland Valve Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Portland Valve Llc (CAGE 53154) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-513-9156 |
| Primary Part Number | 101-1873 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Portland Valve Llc |
| 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 |
|---|---|
| 101-1873 PRIMARY | Portland Valve Llc (USA) |
| 501-0555 PC 14 | Portland Valve Llc (USA) |
NSN 5310-01-513-9156 is a Washer,flat, manufactured by Portland Valve Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-513-9156 has 2 manufacturer part numbers on file: 101-1873 (Portland Valve Llc), 501-0555 PC 14 (Portland Valve Llc).
1 possible match (shared part number, not a government interchangeability claim): 5910-01-562-0623. 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.