1. The outer edge of the screw head of Socket head screws is round, and the middle is a recessed hexagon. Hexagonal screws are common screw heads whose sides are hexagonal. The Socket head screw knife looks like a "7". Cut the two ends of a hexagonal steel bar and bend it to 90 degrees to form a Socket head screw wrench, which is sold in hardware tool stores.
2. The manufacturer should negotiate with the customer to use the hexagon socket bolt production wire;
3. The manufacturer must remember to harden the produced natural hexagon socket bolts, and the hardening factory must be required to achieve the indicated hardness index;
4. Customers are required to use the corresponding tools reasonably when using them, mistakenly use unreasonable tools to drive hexagon socket bolts for convenience. Communicate with customers, when hitting hexagon socket bolts, you don't need to use too much force. Grasp the balance of strength. M2.5 Hexagon socket bolts should be able to withstand 2N under normal conditions. Torsional force above m, so adjust the force just right, not too much force.
