Self drilling screw description :
Similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate
to eliminate the need for drilling a pilot hole. Designed for use in soft steel or other metals.
The points are numbered from 1 through 5, the larger the number, the thicker metal it can
go through without a pilot hole. A 5 point can drill a 0.5 in (12.7 mm) of steel, for example.
We are the professional manufacturer of Screws and Rivets,located in zhejiang province.
The biggest advantage of our company is to specialize in producing various kinds of
special screws.So customized fastenters can be made as customer's sample or drawing.