The Washer,key, cataloged under National Stock Number 5310-00-020-9053, 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14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-020-9053 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.049 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Special Test Features | NAVORD OD36190 |
| Criticality Code Justification | ZZZY |
| Style Designator | KEY |
| Material Document and Classification | QQ-B-613B COMP 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.294 INCHES MINIMUM AND 0.298 INCHES MAXIMUM IN |
| Material Thickness | 0.034 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | COPPER ALLOY OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.211 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 2295486P1 | 3/1 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5310-00-020-9053 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-450-5092. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-020-9053: Internal Straight Key Width: 0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.049 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Special Test Features: NAVORD OD36190. 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.