螺丝攻牙径对照表 最大 最小 最大 最小 M1.0×0.25 0.75 0.785 0.729 M1×0.2 0.8 0.821 0.783 M1.1×0.25 0.85 0.885 0.829 M1.1×0.2 0.9 0.921 0.883 M1.2×0.25 0.95 0.985 0.929 M1.2×0.2 1 1.021 0.983 M1.4×0.3 1.1 1.142 1.075 M1.4×0.2 1.2 1.221 1.183 M1.6×0.35 1.25 1.321 1.221 M1.6×0.2 1.4 1.421 1.383 M1.7×0.35 1.35 1.421 1.321 M1.7×0.2 1.45 1.5 1.463 M1.8×0.35 1.45 1.521 1.421 M1.8×0.2 1.6 1.621 1.583 M2×0.4 1.6 1.679 1.567