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The thread rolling dies we supply for customers including: Self-tapping screw Chipboard screw Drywall screw Wood screw Machine screw Taptite screw Hi-low thread screw Please specify the details of thread rolling dies as follows when you inquire or order; 1.the material of thread rolling die you need or the material of screw you used 2.the type of thread rolling die for machine thread or tapping screw. 3.the screw head shape/type,for example: round head, pan head,flat head and so on. 4.the screw type,size,length and major diameter/rolling shank,for example: 5.the machine model/maker,die plates size,for example:GV-2 24X55X112/131(5) 6.the special specification out of standard is also available, but necessarily with a drawing for reference.