The Washer,key, cataloged under National Stock Number 5310-01-343-4159, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-343-4159 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.450 INCHES NOMINAL IN |
| External Prebent Key Length | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5540,TY 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.220 INCHES NOMINAL IN |
| Material Thickness | 0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| External Key Quantity | 2 |
| External Prebent Key Width | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY 600 OVERALL |
| Hole Diameter | 0.710 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 | N |
| Reference | Meaning |
|---|---|
| 17P1C2135-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-343-4159 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-343-4159: Distance From Centerline to Inside of Prebent Key: 0.450 INCHES NOMINAL IN; External Prebent Key Length: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: AMS 5540,TY 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 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.