The Washer,flat, cataloged under National Stock Number 5310-00-662-4140, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Corporation. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-662-4140 |
| Primary Part Number | 523571 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Surface Finish | 40.0 MICROINCHES TOP |
| Surface Finish | 40.0 MICROINCHES BOTTOM |
| Surface Finish | 100.0 MICROINCHES INNER |
| Surface Finish | 100.0 MICROINCHES OUTER |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Heat Treatment | AS FABRICATED |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.322 INCHES NOMINAL IN |
| Thickness | 0.063 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 |
| Part Number | Manufacturer |
|---|---|
| 523571 PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 523571 | 3/9 Design control — primary reference Goodrich Corp Dba Goodrich Corp |
NSN 5310-00-662-4140 is a Washer,flat, manufactured by Goodrich Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-662-4140 has 1 manufacturer part number on file: 523571 (Goodrich Corporation).
Key specifications for 523571: Surface Finish: 40.0 MICROINCHES TOP; Surface Finish: 40.0 MICROINCHES BOTTOM; Surface Finish: 100.0 MICROINCHES INNER; Surface Finish: 100.0 MICROINCHES OUTER. 13 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.