The Washer,flat, cataloged under National Stock Number 5310-01-481-9638, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 specifications, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-481-9638 |
| Primary Part Number | 122-6818601 PC 72 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 0.688 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.344 INCHES NOMINAL IN |
| Thickness | 0.065 INCHES NOMINAL IN |
| 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 |
|---|---|
| 122-6818601 PC 72 | Naval Sea Systems Command (USA) |
| 122-6818602 PC 47 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 122-2420529 PIECE 10 | 3/2 Design control — primary reference U.S. Government activity |
| 2420529 | 5/9 Secondary reference Naval Sea Systems Command |
| 6818602 | 5/9 Secondary reference Naval Sea Systems Command |
| 122-2420529 PIECE 100 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 5310-01-481-9638 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-481-9638 has 2 manufacturer part numbers on file: 122-6818601 PC 72 (Naval Sea Systems Command), 122-6818602 PC 47 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 5310-01-484-0732, 5310-01-484-5324, 5310-01-484-5329. Verify interchangeability with system specifications before substitution.
Key specifications for 122-6818601 PC 72: Overall Diameter: 0.688 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; End Item Identification: MARINE HARDWARE & HULL DOORS. 7 specifications are 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.