The Washer,key, cataloged under National Stock Number 5310-00-253-8276, 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12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-253-8276 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.181 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Style Designator | 90 DEGREE LOCKING KEY |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| External Tapered Key Width | 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Material Thickness | 0.170 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| External Prebent Key Angle | 15.0 DEGREES NOMINAL |
| External Prebent Key Width | 0.080 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Angle Between External Keys | 48.0 DEGREES MINIMUM AND 52.0 DEGREES MAXIMUM |
| Hole Diameter | 0.170 INCHES MINIMUM AND 0.175 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 |
|---|---|
| MS9581-08 | 2/2 Government specification standardization U.S. Government activity |
| 10477799 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-00-253-8276 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-253-8276: Distance From Centerline to Inside of Prebent Key: 0.181 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN; External Prebent Key Length: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Style Designator: 90 DEGREE LOCKING KEY; Material Document and Classification: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.