3a thread class right-hand 0.662" thread length bevel-conical head style 24 thread quantity per inch bolt has drilled head; bolt part of valve assembly cadmium surface treated unjf thread series
3a thread class right-hand 2.250" overall length 16 thread quantity per inch threads are to be coated with lubricant cid-a-a-59004; used on valve for a float automatic vent unc thread series