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具有前缀“J”和“PH”的位通常被认为是相同的。 不要被他们相似的外表所愚弄 - 他们是完全不同的。
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十字（PH）螺丝设计成使十字螺丝刀凸出，如果施加过大的扭矩。 这样可以防止损坏螺钉和螺丝刀或钻头。
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日本工业标准（J）螺丝不凸出，并有90度角。
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即将完成！
终点
70等其他人完成本指南。
2条评论
Excellent guide. could not figure out the difference by looking.
It would be clearer if the displayed drawing of each bit actually said J-bit or PH-bit, and because both have 90 degree corners, maybe change the J-bit description to “have 90 degree square inside corners“ and include in the PH description “have 90 degree rounded inside corners.
Otherwise, with interpretation, your article helped me.
