WSHR FLT .31 .38 .88 .083 (Doosan DWYT4490210-01)

A worn flat washer can allow fastener loosening under vibration, leading to component misalignment or detachment. This aftermarket replacement part references Doosan catalog number DWYT4490210-01. The washer provides a smooth bearing surface for a fastener head or nut, distributing clamping load evenly. If the washer deforms or corrodes, the fastener may lose preload, risking joint failure in a bolted assembly. During routine disassembly, a technician might find a crushed or missing washer that requires replacement. The washer measures 0.31-inch inner diameter, 0.38-inch outer diameter, 0.88-inch thickness, and 0.083-inch material thickness. Verify the serial number or application, then call (562) 693-7748.

Part number variants: DWYT4490210-01, dwyt4490210-01, DWYT449021001, dwyt449021001