... etc 3. BSP,BSPT,JIC,NPT etc Hydraulic Fitting Hydraulic adapter Hydraulic Couplings 1) Material: Carbon Steel. Stainless Steel, Brass etc ... Silver Zinc,Trivalent Yellow Zinc, Hexavalent Yellow Zinc, Chrome Plate Electric-polish etc.4) Standard: SAE J514, SAE J453, DIN2353, BS52005 ...