기능

• One type (single chamfer) with the same hex width as a nut of one size smaller nominal diameter, and the height is 80% of nominal diameter.
• S45C material has been heat treated to increase strength and chromated (yellowish color).
• When strength is required, it is used for fastening, fastening and fixing to external screws.
• Because the head is small, it can be reduced in weight and size, and it is also used for bolts of the same strength.
• Has more corrosion resistance than fabric.