Impact screw

Abstract

An impact screw includes a head part, a shaft part, a tail part, and a chip removal groove. The shaft part is connected with the head part and has a threaded section and a smooth section connected between the threaded section and the head part. The smooth section has a first outer diameter. The threaded section has a second outer diameter and a thread root diameter. The second outer diameter is greater than the first outer diameter. The threaded section has threads, each having a pitch. The thread root diameter is smaller than double the pitch. The tail part is on one end of the shaft part. The chip removal groove extends from the threaded section toward the tail part. Arrangement direction of the chip removal groove is opposite to the threading direction of the threaded section, improving the smoothness of the impact screw entering an object.

Dependencies are inferred from the claim text.