• What are the mechanical requirements for self-drilling and tapping screws?

    What are the mechanical requirements for self-drilling and tapping screws?

    1. Core hardness of self-drilling and self-tapping screws: standard value HRC28-38. The test is carried out on a section 1-2 times the nominal diameter from the tail. If the nominal length is too short, you can embed it first, and then measure the hardness. 2. Surface hardness: standard MINHV450. 3.... read more

    Dec 28,2020 News
  • What are the applications and characteristics of self-tapping screws?

    What are the applications and characteristics of self-tapping screws?

    Locking self-tapping screws are used for non-metal or soft metals, without drilling and tapping; locking self-tapping screws are pointed, so that they can be "locked and self-tapping"; ordinary screws are flat-headed and thick Consistent. Tightening the self-tapping screw means: the drilled hole is ... read more

    Dec 12,2020 News
  • What are the characteristics of large pitch self-tapping locking screws

    What are the characteristics of large pitch self-tapping locking screws

    The large-pitch self-tapping locking screw is a special fastener formed by a triangular thread. It is specially designed to fasten plastic and soft metal products. It is called "Priston thread self-tapping locking screw" abroad. Screw. The cross-section of the screw is a unique triangular isometric ... read more

    Dec 21,2020 News
  • Processing technology of high-strength anti-theft screw

    Processing technology of high-strength anti-theft screw

    In addition to the cold heading process, the manufacturing processes of high-strength anti-theft screws include warm forging, cold extrusion and cutting. The high-strength cold heading screw production process of wind power anti-theft screws is: spheroidizing annealing→cold drawing→cold heading form... read more

    Dec 03,2020 News
  • What is the performance of non-standard screw fasteners for automobiles?

    What is the performance of non-standard screw fasteners for automobiles?

    Fasteners, as the connection between the host and parts, are tested in various harsh service environments along with the host. They are used in high temperature, high pressure, low temperature, vibration, corrosion, heavy load, alternating stress, shear and torsion resistance Various occasions. The ... read more

    Nov 30,2020 News