What are the groove types of the low head cap screw?

There are many groove types of screw fasteners, like torx, phillips, hexagon socket, h type, triangle, slotted, phillips slot, pozi, y type, tri wing, etc. So what are the groove types of the low head cap screw?

carbon steel phillips shoulder screws, low head cap screw

aluminum non slotted shoulder screw, low head cap screw

brass slotted low head cap screw

stainless steel phillips slotted shoulder screws, low head cap screw
stainless steel hexagon socket shoulder screw, low head cap screw
stainless steel torx CD screw, low head cap screw




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