The Washer,flat, cataloged under National Stock Number 5310-01-061-1972, 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9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-061-1972 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES BOTTOM |
| Overall Diameter | 6.927 INCHES MINIMUM AND 6.937 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-T-9046,TY 3,COMP C MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-9046,TY 1,COMP B MIL SPEC 1ST MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | TITANIUM ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 4.980 INCHES NOMINAL IN |
| Thickness | 0.030 INCHES MINIMUM AND 0.034 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 |
|---|---|
| 4687582-0010 | 5/9 Secondary reference U.S. Government activity |
| 2642-860-02 ITEM 10 | 5/2 Secondary reference U.S. Government activity |
| 4687582-10 PIECE 10 | 3/2 Design control — primary reference U.S. Government activity |
| 845-4687581 ITEM 23 | D/9 Drawing number reference only U.S. Government activity |
| 2642-860-01 ITEM 23 | D/9 Drawing number reference only U.S. Government activity |
NSN 5310-01-061-1972 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-061-1972: Surface Finish: 32.0 MICROINCHES BOTTOM; Overall Diameter: 6.927 INCHES MINIMUM AND 6.937 INCHES MAXIMUM IN; Material Document and Classification: MIL-T-9046,TY 3,COMP C MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-9046,TY 1,COMP B MIL SPEC 1ST MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.