Sems Screw
Description:
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.
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