extra long socket screws, one-time molding

Usually, the socket screws above 100mm are called extra long socket screws. The size of the most commonly used extra long socket screws is M3 M4 M5 M6, the length is 100mm 120mm 164mm to 500mm, and the SST longest long screw is 1990mm.

Usually, the SST recommends that customers use stainless steel 304 as the extra long socket screws, because if the carbon steel needs to heat treatment, it will lead to the bending of the screw during heat treatment, the long screw is not easy to heat treatment, and the use of stainless steel 304, there is no need to harden.

If your extra long socket screws need higher strength, it must be heat treated before it can meet the strength requirements. SST can also do it, but special treatment is needed in the process of screw heat treatment, so the cost will increase.

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