The Washer,key, cataloged under National Stock Number 5310-00-186-3154, 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15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-186-3154 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Internal Straight Key Width | 0.363 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 2.703 INCHES NOMINAL IN |
| Overall Distance Including Keys | 6.375 INCHES NOMINAL IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM |
| Style Designator | KEY |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 6.218 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| External Straight Key Width | 0.304 INCHES NOMINAL IN |
| External Key Quantity | 3 |
| Test Data Document | 99207-+3TF2 CLASS A SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL OVERALL |
| Internal Key Quantity | 4 |
| Hole Diameter | 5.770 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 | X |
| Reference | Meaning |
|---|---|
| 3020T56P01 | 3/2 Design control — primary reference U.S. Government activity |
| 3020T56P01 | 5/9 Secondary reference Crystal Machine and Die Corp |
NSN 5310-00-186-3154 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-186-3154: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Internal Straight Key Width: 0.363 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 2.703 INCHES NOMINAL IN; Overall Distance Including Keys: 6.375 INCHES NOMINAL 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.