The Washer,finishing, cataloged under National Stock Number 5310-00-554-2560, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-554-2560 |
| Item Name | Washer,finishing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Heat Treatment | QUENCHED AND TEMPERED |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Style Designator | FINISHING |
| Material Document and Classification | MIL-S-5626,COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.000 INCHES NOMINAL IN |
| Material Thickness | 0.160 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 4140 OVERALL |
| Hole Diameter | 0.515 INCHES MINIMUM AND 0.520 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 |
|---|---|
| 63-1143 | 3/2 Design control — primary reference U.S. Government activity |
| 9633-27 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 5310-00-554-2560 is a Washer,finishing, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-554-2560: Overall Height: 0.250 INCHES NOMINAL IN; Heat Treatment: QUENCHED AND TEMPERED; Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Style Designator: FINISHING. 9 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.