The Washer,key, cataloged under National Stock Number 5310-01-266-2474, 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14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-266-2474 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.500 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 8.062 INCHES MAXIMUM IN |
| Style Designator | EXTERNAL AND INTERNAL PRE-BENT KEYS |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 7.062 INCHES MINIMUM AND 7.122 INCHES MAXIMUM IN |
| Material Thickness | 0.148 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 2 CLASS |
| External Key Quantity | 19 |
| Internal Prebent Key Length | 0.312 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 5.983 INCHES MINIMUM AND 6.018 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 |
|---|---|
| MS19070-303 | 2/2 Government specification standardization U.S. Government activity |
| MIL-W-21338 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-266-2474 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-266-2474: Internal Prebent Key Width: 0.500 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN; Overall Distance Including Keys: 8.062 INCHES MAXIMUM IN; Style Designator: EXTERNAL AND INTERNAL PRE-BENT KEYS; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 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.