기능

• JIS standard drill screw with tapping thread.
• Stable quality, excellent workability, and excellent fastening force by design based on JIS standards.
• Since heat treatment and hardness control are carried out according to the standard, fracture due to high hardness can be avoided.
• Thin iron plate can be fastened to C-shaped steel without a pre-hole.
• For joining counterbored hardware and C-type steel.
• Use drill screws suitable for fasteners.
• When using, tighten with appropriate torque to avoid insufficient screwing, screw breakage and head skipping.
• Apply the drill screws perpendicular to the fasteners.
• Wear safety glasses when driving screws.