The Washer,key, cataloged under National Stock Number 5310-01-122-2009, 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14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-122-2009 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.665 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN |
| Split Key Length | 0.200 INCHES NOMINAL IN |
| External Prebent Key Length | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.436 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.055 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN |
| Material Thickness | 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| External Key Quantity | 1 |
| External Prebent Key Angle | 15.0 DEGREES NOMINAL |
| External Prebent Key Width | 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Angle Between External Keys | 90.0 DEGREES NOMINAL |
| Hole Diameter | 0.765 INCHES MINIMUM AND 0.770 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 |
|---|---|
| MS9276-17 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-122-2009 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-122-2009: Distance From Centerline to Inside of Prebent Key: 0.665 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN; Split Key Length: 0.200 INCHES NOMINAL IN; External Prebent Key Length: 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.436 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.