Direct factory sales of locating plungers, spring plungers, spring screws, and spring locating pins: PT-56-60, PT-56-61, PTL2-04-4, and other specifications. Shenzhen Hengbo Precision Hardware Co., Ltd. specializes in the production and sales of various products that meet the American PEM and Southco standard press-fit screws. We have a large inventory of common components. Welcome new and old customers to send us drawings for custom manufacturing. We look forward to establishing a good mutual trust and reciprocal business partnership.