The Washer,shouldered, cataloged under National Stock Number 5310-01-415-1321, 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 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-415-1321 |
| Primary Part Number | 6406435 FIND 4 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside Diameter | 2.750 INCHES NOMINAL IN |
| Shoulder Diameter | 2.125 INCHES NOMINAL IN |
| Material | COPPER ALLOY 630 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 |
|---|---|
| 6406435 FIND 4 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 515-6406435-4 | 5/9 Secondary reference Naval Sea Systems Command |
| 211086407 | 5/9 Secondary reference Naval Sea Systems Command |
| DA2730-801 FIND 4 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 211067059 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 5310-01-415-1321 is a Washer,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-415-1321 has 1 manufacturer part number on file: 6406435 FIND 4 (Naval Sea Systems Command).
Key specifications for 6406435 FIND 4: Overall Height: 0.562 INCHES NOMINAL IN; Outside Diameter: 2.750 INCHES NOMINAL IN; Shoulder Diameter: 2.125 INCHES NOMINAL IN; Material: COPPER ALLOY 630 OVERALL. 3 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.