The Washer,key, cataloged under National Stock Number 5310-00-435-0995, 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14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-435-0995 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633,TYPE 2,CLASS 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 4.938 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 4.281 INCHES MINIMUM AND 4.326 INCHES MAXIMUM IN |
| Material Thickness | 0.088 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 2 TYPE AND 1 CLASS |
| External Key Quantity | 19 |
| Internal Prebent Key Length | 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| External Prebent Key Width | 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Material | STEEL COMP 8735 OVERALL |
| Hole Diameter | 3.582 INCHES MINIMUM AND 3.612 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 |
|---|---|
| MS19070-182 | 2/2 Government specification standardization U.S. Government activity |
| MIL-W-21338 | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-435-0995 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-435-0995: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633,TYPE 2,CLASS 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN; Overall Distance Including Keys: 4.938 INCHES MAXIMUM IN; Style Designator: KEY. 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.