Shop › 1/2" Nut & Nipple LH 1/2" Nut & Nipple LH $10.95 1/2” Nut and Nipple NPT, left hand thread. 1/2” Nut and Nipple NPT, left hand thread. Add To Cart Added! You Might Also Like 10mm Brabed Nipple 8mm Barbed Nipple 9/16 To 5/8 UNF 5/8 UNF Nut R/H 6mm Barbed Nipple