Product Information Male Thread: NPT Select a Product Part NumberMaterialMale Thread SizeLength 1630400CBrass1/4".63" 1631600CBrass1"1.35" 1630200CLFLead Free Brass1/8" 1630200CBrass1/8".56" 1630800CBrass1/2".97" 1630400CLFLead Free Brass1/4" 1630600CBrass3/8".79" 1631200CBrass3/4".97"