The Washer,key, cataloged under National Stock Number 5310-00-400-7764, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-400-7764 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| External Straight Key Length | 0.094 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | M-S 284-154,FSCM 96152 MFR REF 1ST TREATMENT RESPONSE OR M-S 284-151,FSCM 96152 MFR REF 2ND TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 0.703 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 0.280 INCHES NOMINAL IN |
| Peening Key Length | 0.288 INCHES NOMINAL IN |
| Material Thickness | 0.036 INCHES NOMINAL IN |
| External Straight Key Width | 0.093 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR NICKEL OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.169 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 78A109 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-00-400-7764 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-400-7764: External Straight Key Length: 0.094 INCHES NOMINAL IN; Surface Treatment Document and Classification: M-S 284-154,FSCM 96152 MFR REF 1ST TREATMENT RESPONSE OR M-S 284-151,FSCM 96152 MFR REF 2ND TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 0.703 INCHES NOMINAL IN; Style Designator: KEY. 11 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.