Part Number Stock Code ID Thread 339-8C 87194 1/2" 3/8" 339-8D 89928 1/2" 1/2" 339-10C 87192 5/8" 3/8" 339-10D 89912 5/8" 1/2" 339-12D 87193 3/4" 1/2" : WARNING - Cancer and Reproductive Harm - www.p65warnings.ca.gov