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Stainless Steel A2-70 A4-80 Cross Recessed Pan Head Self Tapping Screws Product：

Self tapping screw [1] although it has been used for a long time, generally know how to make, but for the standards and requirements stipulated by the specifications, may not be very clear, here only by collecting the specifications, sort out a suitable for everyone to read, so that there is more than a layer of understanding of self tapping screw. Tapping screw is a threaded fastener that taps and drills the matching female thread in pre-drilling metal or non-metal material. With high tension, single piece, single side combination characteristics. Because of its own forming or tapping out its matching thread, it has high anti-loose ability in combination.

Functions of self-tapping screws - When assembling and disassembling self-tapping screws, slotted self-tapping screws need to use a zigzagging screw, cross slot self-tapping screws need to use a cruciform screw, hex flower shaped self-tapping screws need to use a hex flower shaped wrench, hex head self-tapping screws need to use a fixed wrench, square wrench, socket wrench or adjustable wrench.

Production Process