You can rest assured to buy customized A2-70 A4-80 Stainless Steel 304 316 A2 A4 Countersunk Square Head Self Drilling Screws from us. We look forward to cooperating with you, if you want to know more, you can consult us now, we will reply to you in time!

A2-70 A4-80 Stainless Steel 304 316 A2 A4 Countersunk Square Head Self Drilling Screws

The screw is a tool for fastening the machine parts step by step by using the physics and mathematics principles of the circular rotation of the inclined plane and friction. The drilling screw is a screw with a self-tapping drilling head at its front end.

The tail of the drilling screw is in the shape of drilling tail or pointed tail, without auxiliary processing, it can be directly drilled, tapped and locked on the setting materials and basic materials, greatly saving construction time. Relatively common screw, its high ductility and maintenance force, combination after a long time will not loose, the use of safety drilling tapping once to complete the operation is simple.

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