Danco 81080 Sink Strainer Nut and Washer Set Metal nut fits standard sink strainers Designed for kitchen sinks Nut measures 4-3/8 in. OD x 3-11/32 in. ID x 7/16 in. Includes (1) 4-3/8 in. OD x 3-7/16 in. ID x 1/8 in. Thick washer Includes (1) 4-3/8 in. OD x 3-11/32 in. ID x 7/16 in. Thick washer Easy to install