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The Allen head, also known as a hex socket head, is a type of screw head designed with a hexagonal recess that accommodates an Allen wrench or hex key. This design provides several advantages over traditional slotted or Phillips head screws. Firstly, the Allen head offers better torque transfer, allowing for more precise and controlled tightening. Secondly, the hexagonal shape reduces the chances of the tool slipping during installation, minimizing the risk of damage to the wood or injury to the user.

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HEBEI YUETONG FASTENERS 5 16 threaded rod 4 inch