... washer/spring washer 1)Material:Carbon,stainless steel 2)Size: Un-finite 3)Finishing ... Products Detailes: 1NameScrew,bolts.nuts2MaterialIron,carbon steel,brass,aluminum,stainless steel3Diameter rangeM3-M16 mm ,the length ... head13Drive typesSlot, Phillips, Phillips tamper-resistant, Square,Square recess14webistewww.tf-screw.comWe are china factory ... at 0086-13798740287 stainless steel Square Taper Washer