• What are the grades of high-strength fasteners?

    What are the grades of high-strength fasteners?

    High-strength threaded fasteners are generally divided into four levels, 8.8, 9.8, 10.9 and 12.9, and are generally quenched and tempered medium carbon steel or medium carbon alloy steel. In order to eliminate the annealing and quenching and tempering process in the production process, high-strength... read more

    Nov 19,2020 News
  • What are the factors that affect the calculation of fastener flexibility coefficient?

    What are the factors that affect the calculation of fastener flexibility coefficient?

    The main factors affecting the calculation of the flexibility coefficient of fasteners such as pressure riveting screws are: the geometric size of the fastener, the stiffness of the fastener material, the geometric size of the base and the strip, and the stiffness of the base and the strip material.... read more

    Nov 12,2020 News
  • What are the common types and names of fasteners?

    What are the common types and names of fasteners?

    Bolt: A type of fastener consisting of two parts, a head or a screw (cylinder with external thread), which needs to be matched with a nut to fasten and connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be... read more

    Nov 04,2020 News
  • What are the precautions for using screwdrivers?

    What are the precautions for using screwdrivers?

    1) When using a screwdriver to fasten or remove a live screw, the handle of the screwdriver should be kept dry and clean to prevent leakage during live operation. Do not use the threaded screwdriver, put an insulating tube on the metal rod of the screwdriver, and do not touch the metal rod of the pr... read more

    Oct 23,2020 News
  • Knowledge of high-strength fasteners

    Knowledge of high-strength fasteners

    High-strength fasteners are fastener products with mechanical properties of 8.8 (bolts, studs, inner triangular screws), 8 (nuts), and 33H (set screws). The specific mechanical performance levels are bolt feces 8.8, l0.9, l2} nuts 8, 10, 12, and set screws 33H and 45H. The high-strength bolts are ma... read more

    Oct 30,2020 News