The Washer,key, cataloged under National Stock Number 5310-00-348-3989, 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12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-348-3989 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.115 INCHES NOMINAL IN |
| External Straight Key Length | 0.187 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.187 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.124 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-636,COND 5,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| External Straight Key Width | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| External Key Quantity | 4 |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.516 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 |
| Reference | Meaning |
|---|---|
| 111841-8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-348-3989 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-348-3989: Internal Straight Key Width: 0.115 INCHES NOMINAL IN; External Straight Key Length: 0.187 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.187 INCHES NOMINAL IN; Overall Distance Including Keys: 1.124 INCHES NOMINAL IN. 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.