The Washer,flat, cataloged under National Stock Number 5310-01-648-1719, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-648-1719 |
| Primary Part Number | 9504-123-062 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 7840-108PC57 | Velan Valve Corp. (USA) |
| 9504-123-062 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 7840-108 | D/9 Drawing number reference only Velan Valve Corp. |
NSN 5310-01-648-1719 is a Washer,flat, manufactured by Velan Valve Corp., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-648-1719 has 2 manufacturer part numbers on file: 7840-108PC57 (Velan Valve Corp.), 9504-123-062 (Velan Valve Corp.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-648-1751. Verify interchangeability with system specifications before substitution.
Key specifications for 9504-123-062: Part Name Assigned by Controlling Agency: WASHER; Material: STEEL OVERALL. 1 specification is documented in the U.S. Government catalog.
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.