Sink waste/drain SW-3.

Features:
Straight configuration
1 1/2" screw
2 7/8" flange
2" cut-out
Includes strainer insert
Note: Forespar threaded plumbing fittings, like most true marine plumbing fittings, use NPSM threads (National Standard Free-Fitting Straight Mechanical Pipe Thread). NPT (National Pipe Threads) are tapered, NPSM Threads are parallel. The two types are not designed to work together.