GRAINGER APPROVED 520-907HC Locknut, Malleable Iron, 1 1/2 in, NPT 6KJ28
Locknut, 1 1/2 in Nominal Pipe Size, Class Class 150, Malleable Iron, Female NPT, -20 Degrees to 366 Degrees F For low-pressure plumbing applications including air, water, natural gas, and steam.