Tapping screw it doesn't need to make thread in the part to be connected in advance.

Characters of tapping screwThe tapping screw is hard, and it doesn't need to make thread in the part to be connected in advance. When connecting, use the screw to directly tap out the thread. When using, it has function of tapping and locking.

Kinds and purpose of tapping screw1. tapping A teeth screw, it is sharp at front, large teeth distance, the outside diameter is larger than B teeth/AB teeth, and it is generally used in below 1.2 MM thin steel plate or brass plate/ aluminum plate/wood resin/wood,etc.2. AB teeth screw is flat tail at the head, and the teeth number/outside diameter/teeth bottom are the same as the teeth number of AB teeth, and it is usually used for below 5MM steel plate, brass plate/aluminum plate, etc. When used in cast iron or synthesized resin, the head needs cutting the nail.3. The tapping AB teeth screw is sharp at the head, and the teeth number/outside diameter/teeth bottom are the same as the teeth number of B teeth, and the use function is the same as A teeth/B teeth, and only the tapping speed is different in use.Remarks: P represents distance between thread θ represents thread angle.

tapping screw