Why is the allen drive cap screw recommended to change the design? Screw manufacturer

Before, Shi Shi Tong allen drive cap screw manufacturer received a drawing sent by a manufacturer of bicycle accessories. On the drawing, the diameter of the head required by the customer is 8mm, the opposite sides of the inner hexagon are 4, the depth of the groove is 4.5mm, and the thickness is only 4.65mm .

After reading the entire drawing, the Shi Shi Tong screw manufacturer suggested to the customer to change the groove of the screw to about 3.5mm. According to the original design, after production, the groove of the screw is too deep, and the tip of the groove will penetrate the screw at that time. Even if it is not pierced, the distance between the groove and the edge of the head is very close. will be twisted off.

At the same time, because the material requested by the customer is SCM435, but the hardness requirement exceeds 12.9 grades. We told the customer that if the hardness of the allen drive cap screw is too high, it may be broken. Because the higher the hardness, the lower the toughness, and it will be easily brittle. Therefore, customers are advised to reduce the hardness of the screw to avoid the risk of broken ends.

After suggesting this to the customer, the customer said that their team needs to re-evaluate the allen drive cap screw design issues of production and manufacturing, and thank us for making suggestions from a professional perspective.

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