The Washer,key, cataloged under National Stock Number 5310-00-994-1602, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-994-1602 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.278 INCHES MINIMUM AND 0.298 INCHES MAXIMUM IN |
| Split Key Length | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.812 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| External Tapered Key Width | 0.250 INCHES NOMINAL IN |
| Material Thickness | 0.038 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN |
| External Key Quantity | 1 |
| External Prebent Key Angle | 15.0 DEGREES NOMINAL |
| External Prebent Key Width | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Angle Between External Keys | 30.0 DEGREES NOMINAL |
| Hole Diameter | 0.262 INCHES MINIMUM AND 0.268 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 |
|---|---|
| A-76783 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-994-1602 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-994-1602: Distance From Centerline to Inside of Prebent Key: 0.278 INCHES MINIMUM AND 0.298 INCHES MAXIMUM IN; Split Key Length: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; External Prebent Key Length: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.812 INCHES NOMINAL IN. 14 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.