SEMS Machine Screw and Sems Screw

SEMS SCREW

• Size :  M2~M20
• Length :  3mm~200mm
• Material :  Carbon Steel  /  Stainless Steel 
• Washer type :  Round washer, Special washe, flat washer, external/internal lock washer, Split lock washer
• Surface Treatment :  Zinc plated, Yellow Zinc plated, Black zinc, Zinc Nickel, Mechnical Galvanized, Ruspert，Slat Spray Test according to customer requirement. 
• Standard :  DIN, IFI, JIS, according to customer's drawing
• Package :  Bulk packing, Box packing, Bag packing, Blister                    
• Sems screw Usage :  Sems screw of high strength steel construction, it is used in railroad ,highway bridge, boiler steel construction, industry factory, building, tower, and crane. They require to use friction type of high strength sems screw. Sems screw's usage is connected to fasteners, and washer set on screw, as to it doesn't require washer during using. Sems screw has a special usage, that is anti-loose.

Sems Screw, our factory insists on principles of continuous improvement, quality foremost, and sincerity to cooperate with customers both home and abroad. Every Sems Screws could be customized by customer's requirement. Setting internal lock washer, external lock washer, and flat washer choose by your decision. We are looking forward to becoming your trusted supplier in the near future.