Self-tapping screw
Categories: Self-tapping screws
This product is a self-tapping screw with a coarse thread structure. The screw has a thread with an arc-shaped triangular section, which can be screwed into a prefabricated hole of black or non-ferrous metal materials to form an internal thread by extrusion.
Product Introduction
The self-tapping lock screw is a self-tapping screw with a coarse thread structure. The screw has a thread with an arc-shaped triangular cross-section, which can be screwed into a prefabricated hole of black or non-ferrous metal material to form an internal thread by extrusion. When the screw is threaded, its unthreaded rod can be made into a cylindrical or triangular shape with a diameter equal to or smaller than the circumscribed circle. This product has the characteristics of low screw-in torque and high locking performance.
The standards and varieties of self-tapping locking screws in domestic fastener products are: GB/T6560 (cross recessed pan head), GB/T6561 (cross recessed countersunk head), GB/T6562 (cross recessed countersunk head), GB/ Five series of T6563 (hexagonal head) and GB/T6564 (hexagonal flower-shaped cylindrical head).
Product parameter
Specification: M2-M10
Length: 4-80mm
Material: carbon steel
head type: hexagonal flange, pan head
Thread type: self-tapping locking teeth
slot type: cross slot
Tensile strength: 450Mpa
Surface hardness: ≥450HV
Core hardness: 270-390HV
Surface treatment: color zinc, dacromet
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