... , aluminum, copperThread standardsMetric: M10X1, M10X1.25, M12X1, M12X1.25, M12X1.5 M14X1.5 etc.Imperial: 3/8X24, 7/16X24, 7/16X20 ... , 5/8X18 etcStylesMale fitting, female fitting, banjo, nut, boltMaking technicsRivet; welding ... ,OtherMetal accessories, rubber accessories, plastic accessories SAE J1401 hydaulic hose connector