The Washer,concave, cataloged under National Stock Number 5310-01-468-1694, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-468-1694 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES INNER |
| Surface Finish | 125.0 MICROINCHES OUTER |
| Radius | 0.218 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| Style Designator | CONCAVE |
| Outside Diameter | 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Recess Depth | 0.004 INCHES MINIMUM AND 0.014 INCHES MAXIMUM IN |
| Material Thickness | 0.062 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 4130 OR STEEL COMP 8740 OVERALL |
| Hole Diameter | 0.253 INCHES MINIMUM AND 0.263 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 |
|---|---|
| M45595/7-01 | 2/2 Government specification standardization U.S. Government activity |
| MIL-W-45595/7 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-468-1694 is a Washer,concave, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-504-0844. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-468-1694: Surface Finish: 32.0 MICROINCHES INNER; Surface Finish: 125.0 MICROINCHES OUTER; Radius: 0.218 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM. 11 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.