The Washer,key, cataloged under National Stock Number 5310-01-127-8522, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-127-8522 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN |
| Split Key Length | 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.958 INCHES MINIMUM AND 0.986 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| External Tapered Key Width | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Material Thickness | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| External Key Quantity | 1 |
| External Prebent Key Angle | 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM |
| External Prebent Key Width | 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Material | STEEL COMP 321 OVERALL |
| Angle Between External Keys | 58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.260 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 |
|---|---|
| 10109469 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4061T49P01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-127-8522 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-127-8522: Distance From Centerline to Inside of Prebent Key: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN; Split Key Length: 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN; External Prebent Key Length: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.958 INCHES MINIMUM AND 0.986 INCHES MAXIMUM IN. 15 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.