Hexalobular socket large flat head tapping screws

Categories: Self-tapping screws

Product details

Product Introduction

The hexalobular socket large flat head tapping screw is a self-tapping screw with a large flat head and hexalobular socket type. Its early design is a threaded forming screw made of hardened steel and the end is type A. It is mostly used to connect the sheet metal of heating and ventilation systems, so it is also called sheet metal screw.

Product parameter

   Specification: 2.2-14

   Length: 3-180mm

  Material: carbon steel

   head type: big flat head

  Thread type: self-tapping

   slot type: quincunx

   Tensile strength: 450Mpa

  Surface hardness: ≥450HV

  Core hardness: 270-390HV

  Surface treatment: Dacromet


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