The Washer,seal, cataloged under National Stock Number 5310-01-643-0950, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Company. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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,seal |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Mcmaster-Carr Supply Company (CAGE 2V507); Espey Mfg and Electronics Corp (CAGE 20950) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-643-0950 |
| Primary Part Number | 94709A418 |
| Item Name | Washer,seal |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmaster-Carr Supply Company |
| 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 |
|---|---|
| 94709A418 PRIMARY | Mcmaster-Carr Supply Company (USA) |
| PL92806ITEM072 | Espey Mfg and Electronics Corp (USA) |
| PL92803ITEM060 | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| 92805 | D/9 Drawing number reference only Espey Mfg and Electronics Corp |
| PL92805ITEM072 | 7/2 Vendor item drawing reference Espey Mfg and Electronics Corp |
NSN 5310-01-643-0950 is a Washer,seal, manufactured by Mcmaster-Carr Supply Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-643-0950 has 3 manufacturer part numbers on file: 94709A418 (Mcmaster-Carr Supply Company), PL92806ITEM072 (Espey Mfg and Electronics Corp), PL92803ITEM060 (Espey Mfg and Electronics Corp).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-643-5669. 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.