KOHLER H: 5/16" (NO THREAD)
A.M. STD. 17/32"-18T H:1/2" (H14.2 x 13L)
MICHIGAN & ARROWHEAD 1/2"-20T H: 5/16"
UNION 33/64"-18T
HARCRAFT 9/16"-20T H:3/8"
T&S BRASS 5/8"-27T H: 13/32"