The Washer,key, cataloged under National Stock Number 5310-00-952-9401, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-952-9401 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.126 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.859 INCHES MINIMUM AND 0.879 INCHES MAXIMUM IN |
| Material Thickness | 0.036 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN |
| External Key Quantity | 9 |
| Internal Prebent Key Length | 0.062 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE OVERALL |
| External Prebent Key Width | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 OVERALL |
| Hole Diameter | 0.515 INCHES MINIMUM AND 0.530 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 |
|---|---|
| MS172271 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| MS172271 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-00-952-9401 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-952-9401: Surface Treatment Document and Classification: AMS 2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.126 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN; Style Designator: KEY. 13 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.