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Class 8 cap head screw

Dry Allen screws are produced in three general shapes: cylindrical head, flat head, and allen nut. The most widely used type of dry Allen screw is the cylindrical head type, which is produced according to the DIN912 standard. Class 8.8 dry allen screw with a cylindrical head, according to the standard, should be produced as a half rib with coarse ribs, but sometimes full rib examples of these screws are also produced to meet the needs of the market.
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