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Personlized Products Brass Self Tapping Screws - Wholesale price can be customized screw series – Dashan
Similar to sheet metal screws, but they have a drill-shaped point to cut through sheet metal or steel which eliminates the need for drilling a pilot hole. These self-drilling screws are designed for use in soft steel or other metals.Self-drilling screw 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 (13 mm) of steel, for example.Self Drilling Screws are used primarily when fastening into steel ... -
2022 wholesale price Self Locking Flange Nut - Wholesale price of building accessories – Dashan
The traditional sealing screw is a section structure, usually the whole tooth screw, welded in the middle of the sealing sheet or cover with expansion sealing ring, to prevent water from passing through the basement wall. In order to save steel, Hebei Dashan appeared a new type of sealing screw, from a section of the structure into a three-section of the structure, also known as the three-section of the pull sealing screw. The three-stage pull sealing screw is composed of a middle screw con...
