What materials are usually used for trapezoidal screws?
Trapezoidal screw materials: 1.General precision (referring to grade 7~9) Trapezoidal screws, for light loads, are usually made of non-alloy medium carbon …
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Trapezoidal screw materials: 1.General precision (referring to grade 7~9) Trapezoidal screws, for light loads, are usually made of non-alloy medium carbon …