The Washer,flat, cataloged under National Stock Number 5310-01-596-6386, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Superior Washer & Gasket Corp. Dba Superior Washer & Gasket Corp. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-596-6386 |
| Primary Part Number | 2550W25737 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Superior Washer & Gasket Corp. Dba Superior Washer & Gasket Corp |
| Status | ACTIVE |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.406 INCHES NOMINAL IN |
| Thickness | 0.050 INCHES MINIMUM AND 0.080 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 |
| Part Number | Manufacturer |
|---|---|
| 2550W25737 PRIMARY | Superior Washer & Gasket Corp. Dba Superior Washer & Gasket Corp (USA) |
| 90313A329 | Mcmaster-Carr Supply Co (USA) |
NSN 5310-01-596-6386 is a Washer,flat, manufactured by Superior Washer & Gasket Corp. Dba Superior Washer & Gasket Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-596-6386 has 2 manufacturer part numbers on file: 2550W25737 (Superior Washer & Gasket Corp. Dba Superior Washer & Gasket Corp), 90313A329 (Mcmaster-Carr Supply Co).
Key specifications for 2550W25737: Overall Diameter: 1.000 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Special Features: FOR SCREW SIZE: 3/8 INCH;FINISH: PLAIN;APPLICATION: FENDER WASHER IN; Peripheral Shape Style: ROUND. 7 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.