Sems screw contains two separate parts which are a screw and a washer providing the locking action and free to rotate. China Zhejiang Jingyi standard component Co., Ltd. specializes in supply sems screw at competitive prices. Sems screw is using in many place, if the sem screws in picture’s gallery do not have, please feel free to contact us what special you need, we are sure that we can make to meet you need. Our annual production capacity is billions screws and we know how to produce good sems screws and other screws, how to meet customers’ satisfactions at reasonable prices.

Strong Points of Sems Screw:

1. Washer insures that it will never come off or be left off your assembly

2. All sems screws from our factories meet the international quality standards: ISO9001

3. We have outstanding service with exceptional product supports to complement your engineering efforts.

Different head style bolt with washer sem BOLT