The Washer,flat, cataloged under National Stock Number 5310-00-641-2858, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 8 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 | 5310-00-641-2858 |
| Primary Part Number | S218278 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Material Document and Classification | MIL-P-15035,TY FBG MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC PHENOLIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.750 INCHES NOMINAL IN |
| Thickness | 0.156 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 |
|---|---|
| S218278 PRIMARY | Westinghouse Electric Corp (USA) |
| 1C6711ITEM6 PRIMARY | Westinghouse Electric Corp (USA) |
NSN 5310-00-641-2858 is a Washer,flat, manufactured by Westinghouse Electric Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-641-2858 has 2 manufacturer part numbers on file: S218278 (Westinghouse Electric Corp), 1C6711ITEM6 (Westinghouse Electric Corp).
Key specifications for S218278: Overall Diameter: 2.000 INCHES NOMINAL IN; Material Document and Classification: MIL-P-15035,TY FBG MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.