คุณลักษณะ

• A screw with a tip structure is used so that it can be reliably supported against pulling.
• Do not use in areas that vibrate.　It may loosen or fall.
• Use your hex nut to stop the hanging bolt from loosening. It may loosen or fall.
• Make sure that the hanging bolt to be installed protrudes at least three threads from the upper end of the tap screw. It may loosen or fall.