Product Introduction

　　 Our company mostly adopts cold heading process to produce pan-head composite groove self-tapping screws. The production equipment used includes high-speed cold heading machine, high-speed thread rolling machine or high-speed planetary thread rolling machine. The reason why a variety of high-speed machines are used for production is to ensure the final quality of the product. Because only the head shape of such products produced by high-speed machines is better, and the thread quality is more reliable.

Product parameter

88彩票　　 Specification: 2.2-14

　　 Length: 3-180mm

88彩票　　 Material: Alloy steel

　　 head type: Pan head

　　Thread type: self-tapping wide thread

　　Groove type: Composite groove

　　 Tensile strength: 1040-1220Mpa

88彩票　　 Rockwell hardness: 32-39

　　Surface treatment: black zinc