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SEMS screw knurled head sems screw with flat washer and spring washer

SEMS screw knurled head sems screw with flat washer and spring washer

  • sems screw
  • SEMS screw knurled head sems screw with flat washer and spring washer
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  • Material: carbon steel, stainless steel, alloy steel, copper, aluminum and other materials
    Hardness: specified according to the customer's drawing.
    Surface treatment: black, black zinc, nickel plating, galvanizing, etc., according to customer needs.
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