WSHR FLT .31 .38 .88 .083 (Nissan NI89-15438)

A worn flat washer can allow fastener loosening under vibration, leading to component misalignment or detachment. This aftermarket replacement part references Nissan catalog number NI89-15438. The washer provides a smooth bearing surface for a fastener head or nut. Its flat profile distributes clamping load evenly across the mating surface. A missing or deformed washer may cause galling or permanent deformation of the joined parts. Verify the serial number or application, then call (562) 693-7748. The washer measures 0.31 inch inside diameter, 0.38 inch outside diameter, 0.88 inch thickness, and 0.083 inch material thickness.

Part number variants: NI89-15438, ni89-15438, NI8915438, ni8915438