The Washer,flat, cataloged under National Stock Number 5310-00-291-7889, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-291-7889 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 2.125 INCHES NOMINAL IN |
| Hardness Rating | 50.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | MIL-R-15624,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Minimum Tensile Strength | 1125 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | RUBBER SYNTHETIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.750 INCHES NOMINAL IN |
| Thickness | 0.250 INCHES NOMINAL 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 |
|---|---|
| 571-3801-1302734REVBPC11 | 5/2 Secondary reference U.S. Government activity |
| 8564-406 PIECE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 202373REVAPC12 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 9864-264X1 PIEC | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3664-84REVBPC11 | 5/2 Secondary reference U.S. Government activity |
| 601-501-1892159REVAPC12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-291-7889 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-291-7889: Overall Diameter: 2.125 INCHES NOMINAL IN; Hardness Rating: 50.0 SHORE DUROMETER A MAXIMUM; Material Document and Classification: MIL-R-15624,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.