螺纹长度可调整的翼形螺钉的侧面图。
螺纹长度可调整的圆头螺钉的侧面图。
螺纹长度可调整的平头一字槽螺钉的侧面图。
Side view of square head bolt with adjustable thread length.
螺纹长度可调整的半埋头十字槽螺钉的侧面图。
Side view of raised countersunk posidriv screw with adjustable thread length.
螺纹长度可调整的半埋头十字槽螺钉的侧面图。
Side view of raised countersunk posidriv screw with adjustable thread length.
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