The Washer,flat, cataloged under National Stock Number 5310-00-285-9720, 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9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-285-9720 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 1.188 INCHES NOMINAL IN |
| Material Document and Classification | C-F-206,TYPE 1,CL 16R3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Minimum Tensile Strength | 400 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | WOOL COMP 16R3 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.875 INCHES NOMINAL IN |
| Thickness | 0.156 INCHES MINIMUM AND 0.187 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 |
|---|---|
| 4X316 | 3/9 Design control — primary reference Haldex Brake Products Corporation |
NSN 5310-00-285-9720 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-003-9451, 5310-01-388-9702. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-285-9720: Overall Diameter: 1.188 INCHES NOMINAL IN; Material Document and Classification: C-F-206,TYPE 1,CL 16R3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Minimum Tensile Strength: 400 POUNDS PER SQUARE INCH LBS. 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.