The Washer,flat, cataloged under National Stock Number 5310-00-185-0086, 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11 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-185-0086 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.453 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Departure From Cited Designator | AS MODIFIED BY OD |
| Nondefinitive Spec/std Data | A TYPE AND 2 GRADE AND D CLASS |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Thickness | 0.064 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 |
|---|---|
| NAS620A416 | 3/2 Design control — primary reference U.S. Government activity |
| 346029PC4 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| X41450PC4 | 5/9 Secondary reference Diebold, Incorporated Div Diebold Electronic Security |
| FFW92TYPEAGRADE2CLASSD | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-185-0086 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-185-0778, 5310-00-996-0135. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-185-0086: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.453 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Departure From Cited Designator: AS MODIFIED BY OD. 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.