YOUNGSTOWN 1/2"-20T H:7/16"
A.M. STD 1/2"-20T H: 3/8"
STERLIANG 1/2"-24T
A.M. STD 7/16"-24T H: 13/32"
SPEAKMAN 7/16"-27 H: 11/32"
SPEAKMAN 5/8"-24T H: 7/16"