The Washer,key, cataloged under National Stock Number 5310-01-381-9782, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-381-9782 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Outside Diameter | 0.815 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN |
| Material | TITANIUM UNS R50700 OVERALL |
| Hole Diameter | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 12697B18C | 3/1 Design control — primary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| 12697B18 | 3/9 Design control — primary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| PL-12731F18ITEM241B | 5/9 Secondary reference U.S. Government activity |
| PL-12731F18ITEM241B | 5/1 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| P013819782 | 5/1 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| 12697B18 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-381-9782 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-618-1617. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-381-9782: Criticality Code Justification: ZZZY; Outside Diameter: 0.815 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN; Material: TITANIUM UNS R50700 OVERALL; Hole Diameter: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN. 5 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.