China DIN7981 GB845 Stainless Steel Pan Head Self-Tapping ...
Self tapping screw DIN 7981 and Selftapping screw DIN 7981 corresponds to the national standard GB845 (equivalent to the international standard ISO7049). Self-tapping screws, also known as quick-thread screws, are quick-fitting fasteners made of steel, which are mostly suitable for the connection between thin metal plates.
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