The Washer,key, cataloged under National Stock Number 5310-01-050-5704, 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14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-050-5704 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.549 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.698 INCHES MINIMUM AND 1.703 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.512 INCHES MINIMUM AND 1.517 INCHES MAXIMUM IN |
| Material Thickness | 0.153 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| External Straight Key Width | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| External Key Quantity | 2 |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 1.283 INCHES MINIMUM AND 1.288 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 |
|---|---|
| 5003322 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-050-5704 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5855-01-275-3111. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-050-5704: Internal Straight Key Width: 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.549 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.698 INCHES MINIMUM AND 1.703 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM. 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.