88彩票Product Introduction

　　Pan head compound groove self-tapping screw with pad refers to a self-tapping screw with a pan head, compound groove type and a washer. Its characteristic is that the groove type is different from ordinary screws, such as slotted, crossed or Phillips grooves, and many different tools can be used to screw this type of screw, which is very convenient to use.

Product parameter

88彩票　　 Specification: 2.2-14

　　 Length: 3-180mm

　　 Material: Alloy steel

88彩票　　 head type: big flat head with cushion

　　Thread type: self-tapping wide thread

　　Groove type: Composite groove

　　 Tensile strength: 1040-1220Mpa

88彩票　　Rockwell hardness: 32-39HRB

　　Surface treatment: black zinc