The Washer,key, cataloged under National Stock Number 5310-01-283-2766, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-283-2766 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.250 INCHES MINIMUM IN |
| Overall Distance Including Keys | 2.859 INCHES MINIMUM AND 2.921 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZY |
| Style Designator | KEY |
| Outside Diameter | 2.438 INCHES MINIMUM AND 2.468 INCHES MAXIMUM IN |
| Material Thickness | 0.058 INCHES NOMINAL IN |
| External Key Quantity | 17 |
| Internal Prebent Key Length | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| External Prebent Key Width | 0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 1.992 INCHES MINIMUM AND 2.017 INCHES MAXIMUM IN |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 938A813-111 | 5/1 Secondary reference U.S. Government activity |
| 1155F20-104 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5310-01-283-2766 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-283-2766: Internal Prebent Key Width: 0.250 INCHES MINIMUM IN; Overall Distance Including Keys: 2.859 INCHES MINIMUM AND 2.921 INCHES MAXIMUM IN; Criticality Code Justification: ZZZY; Style Designator: KEY. 12 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.