The Washer,key, cataloged under National Stock Number 5310-00-171-4233, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-171-4233 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Internal Straight Key Width | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.610 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | +16-TE5 CL 1 99207 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.940 INCHES MINIMUM AND 1.960 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.730 INCHES MINIMUM AND 1.740 INCHES MAXIMUM IN |
| Material Thickness | 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN |
| External Straight Key Width | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| External Key Quantity | 3 |
| Surface Treatment | PHOSPHATE OVERALL |
| Material | STEEL OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 1.420 INCHES MINIMUM AND 1.440 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 |
|---|---|
| 4018T81P03 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-171-4233 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-171-4233: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Internal Straight Key Width: 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.610 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN; Surface Treatment Document and Classification: +16-TE5 CL 1 99207 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 16 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.