pulley-auto parts, machine parts 1.Certificate: ISO/TS: 16949:2009 2.High quality ... pitch H, L, J, K and M 3) Bore pilot bore, finish bore, taper bore, bore for QD bushing 4) Surface finish paint, phosphate, ... , AT2.5, AT5, AT10, AT20 2) Pilot bore, taper bore and QD bore 3) Materials 1045 steel, aluminum and stainless steel 4 ... Standard toothed bars are also available. pulley-auto parts, machine parts