The Washer,flat, cataloged under National Stock Number 5310-01-087-7029, 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11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-087-7029 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | ZZ-R-765,CL 2,GR 50 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 80205-NAS1515 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Minimum Tensile Strength | 70000 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | RUBBER SYNTHETIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN |
| Thickness | 0.053 INCHES MINIMUM AND 0.073 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 |
|---|---|
| NAS1515B5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-087-7029 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-087-7029: Overall Diameter: 0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN; Hardness Rating: 45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM; Material Document and Classification: ZZ-R-765,CL 2,GR 50 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.