选择规格尺寸 点击↓ 2# 3# 4# 5# 6# 8# 10# 12# 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 |
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①,若以小数规定公称直径,应省略小数前和小数点后第四位的零。 ②,机械螺钉的螺纹长度: 1)螺纹规格≤5#: 公称长度≤3倍公称直径的应为满扣产品,头下螺纹肩距≤1倍螺距。 公称长度>3倍公称直径到 1-1/8 in 的,允许头下肩距最大不超过2倍螺距。 若无其他规定,长螺钉的最小螺纹长度为1 in 。 2)螺纹规格≥6#: 公称长度≤3倍公称直径的应为满扣产品,头下螺纹肩距≤1倍螺距。 公称长度>3倍公称直径到 2 in 的,允许头下螺纹肩距最大不超过2倍螺距。 若无其他规定,长螺钉的最小螺纹长度为 1.5 in 。 |
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