Product Information Male Thread: NPT Select a Product Part NumberMaterialMale Thread Size GMAS26Plated Iron/Steel2" (50mm) GMAS11Plated Iron/Steel1" (25mm) GMAS36Plated Iron/Steel3" GMAS21Plated Iron/Steel1-1/2" (40mm) GMAS6Plated Iron/Steel3/4" (20mm) RGMAS6316 Stainless Steel3/4" (20mm) GMAS16Plated Iron/Steel1-1/4"