The Washer,key, cataloged under National Stock Number 5310-01-054-2558, 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13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-054-2558 |
| 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 | 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 3.344 INCHES MAXIMUM IN |
| Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 81.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Outside Diameter | 2.844 INCHES MINIMUM AND 2.874 INCHES MAXIMUM IN |
| Material Thickness | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| External Key Quantity | 17 |
| Internal Prebent Key Length | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| External Prebent Key Width | 0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1031 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OVERALL |
| Hole Diameter | 2.400 INCHES MINIMUM AND 2.425 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 |
|---|---|
| MS19070-122 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-054-2558 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-054-2558: 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: 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN; Overall Distance Including Keys: 3.344 INCHES MAXIMUM IN; Hardness Rating: 50.0 ROCKWELL C MINIMUM AND 81.0 ROCKWELL C MAXIMUM. 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.