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Self Drilling Screws With Wing

Short Description:

Self Drilling Screws With Wing, which includes a head, a rod, a cutting part and a pair of ears, said rod is set in the head below, the rod is provided with threads, said cutting part is set in the end of the rod, the cutting part is provided with cutting groove, said cutting part diameter is smaller than the bottom diameter of the threads on the rod, said clip ear is set symmetrically in the root of the cutting part, the role of the ears is when tapping the plate can play a reaming, not to support the plate The ears are designed to ream the hole when tapping the board, not to pull the board, and to allow the head of the screw to sink completely into the board after entering it. It is used to connect the keel to the calcium silicate board during decoration.

Length:25mm  35mm


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