88彩票Product Introduction

　　Hybrid self-tapping screws refer to self-tapping screws of various structural types, and the biggest feature is their high tensile force. It is generally used to connect thin metal plates to each other. When connecting, first make a threaded bottom hole for the connected piece, and then screw the screw into the threaded bottom hole of the connected piece. Since the threaded surface of the self-tapping screw has high hardness, the internal thread can be tapped in the threaded bottom hole of the connected piece to form a connection.

Product parameter

　　 Specification: 2.2-14

　　 Length: 3-180mm

　　Material: carbon steel

88彩票　　 head type: large flat head, countersunk head, pan head

　　Thread type: self-tapping

88彩票　　 slot type: cross slot, quincunx slot

88彩票　　 Tensile strength: 450Mpa

　　Surface hardness: ≥450HV

88彩票　　Core hardness: 270-390HV

　　Surface treatment: environmentally friendly blue and white zinc, color zinc, black zinc, Dacromet