기능

• The material is iron with trivalent chromate plating.
• Countersunk Head Tapping Screw with Cross Holes with Cutting Blade at the Tip.
• With this cutting blade, you can drill a hole in the iron plate, tap it together, and tighten it with one drill screw.
• Tightening member is for wood only.
• It is used when a plate material such as wood is attached to a steel plate.
• There is no need for hollow holes in the wood.
• The two fins will come off as soon as they touch the steel plate after drilling holes in the wood, so there will be no make-up of the wood.
• Can be directly fastened while positioning on site.