Aluminum 2 1/2" Male Camlock x 4" Male Camlock (USA) Female Threads_NPSH NH or NST: National hose
Yard notes & kiln story
Description
Aluminum 2 1 2" Male Camlock x 4" Male Camlock (USA) Female Threads_NPSH NH or NST: National hose NH or NST: National hose or national standard thread is often referred to as fire hose thread as this is by far the most common thread in use today by fire departments Fits pentagon fire hydrant heads up to 1 7 8 inch and square fire hydrant heads and up to 1 1 2 inch