The Washer,flat, cataloged under National Stock Number 5310-01-676-0804, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Tuthill Corporation Dba Tuthill Pump Group. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Tuthill Corporation Dba Tuthill Pump Group (CAGE 61178) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-676-0804 |
| Primary Part Number | 1L501-A |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Tuthill Corporation Dba Tuthill Pump Group |
| 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 |
|---|---|
| N-1022-H PC 501-A | Tuthill Corporation Dba Tuthill Pump Group (USA) |
| 1L501-A PRIMARY | Tuthill Corporation Dba Tuthill Pump Group (USA) |
| Reference | Meaning |
|---|---|
| N-1022-H | D/9 Drawing number reference only Tuthill Corporation Dba Tuthill Pump Group |
NSN 5310-01-676-0804 is a Washer,flat, manufactured by Tuthill Corporation Dba Tuthill Pump Group, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-676-0804 has 2 manufacturer part numbers on file: N-1022-H PC 501-A (Tuthill Corporation Dba Tuthill Pump Group), 1L501-A (Tuthill Corporation Dba Tuthill Pump Group).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-676-1520. 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.