This self-drilling screw is used for fastening cold-formed steel framing. 

Features

• Hex-washer head
• Clear zinc finish
• Recommended for use with certain Simpson Strong-Tie^® connectors
• #3 Drill point (max. total drilling thickness 0.35")
• Bit included in each box (replacement driver bit — BITHEXR38-R1)

2.5M pcs/ctn