The Washer,flat, cataloged under National Stock Number 5310-01-281-9208, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is DC Fabricators Inc. 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 | 5310-01-281-9208 |
| Primary Part Number | EW-215K |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | DC Fabricators Inc |
| Status | ACTIVE |
| Overall Diameter | 1.375 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.022 INCHES MINIMUM AND 1.027 INCHES MAXIMUM IN |
| Thickness | 0.250 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 |
|---|---|
| EW-2200AP PIECE 831 | DC Fabricators Inc (USA) |
| EW-215K PRIMARY | DC Fabricators Inc (USA) |
NSN 5310-01-281-9208 is a Washer,flat, manufactured by DC Fabricators Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-281-9208 has 2 manufacturer part numbers on file: EW-2200AP PIECE 831 (DC Fabricators Inc), EW-215K (DC Fabricators Inc).
Key specifications for EW-215K: Overall Diameter: 1.375 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL OVERALL. 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.