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A2 Drywall Metal 316 304 Stainless Steel Self Tapping Screw Product：

Self tapping screw hardness is high, thread spacing is wide, thread depth, the surface is not smooth, wood screw is on the contrary, another difference is more obvious, wood screw after the segment without thread. Wood screw thread thin, blunt and soft point. Tapping screw threads are thick, sharp and hard.

The use of tapping screws must be drilled first, and the aperture must be limited. There are cost savings in some areas by eliminating the need for pre-drilling. This is a set of drilling, tapping, tightening in a single operation of the self-tapping screws. The surface hardness and core hardness of the drilling screw is higher than that of the general self-tapping screw. This is because the drilling screw has a drilling operation. In addition, the drilling screw needs to be conducted through the test to test the screw can be drilled and tapped in the specified time.

Production Process