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無(wú)屑絲攻鉆孔徑 | ||||
規(guī)格 | 精度@級(jí) | |||
RH4.5.6 | RH7.8 | RH9 | ||
M1.0×0.25 | 0.86 | 0.88 | - | |
M1.1×0.25 | 0.96 | 0.98 | - | |
M1.2×0.25 | 1.06 | 1.08 | - | |
M1.4×0.3 | 1.24 | 1.25 | - | |
M1.6×0.35 | 1.41 | 1.43 | - | |
M1.7×0.35 | 1.51 | 1.53 | - | |
M1.8×0.35 | 1.61 | 1.63 | - | |
M2.0×0.4 | 1.78 | 1.80 | - | |
M2.2×0.45 | 1.95 | 1.98 | - | |
M2.3×0.4 | 2.08 | 2.10 | - | |
M2.5×0.45 | 2.25 | 2.28 | - | |
M2.6×0.45 | 2.35 | 1.38 | - | |
M3.0×0.5 | 2.73 | 2.75 | - | |
M3.0×0.6 | 3.17 | 3.20 | - | |
M4.0×0.7 | 3.62 | 3.65 | 3.69 | |
M5.0×0.8 | 4.56 | 4.60 | 4.64 | |
M6.0×1.0 | 5.45 | 5.50 | 5.55 | |
M7.0×1.0 | 6.45 | 6.50 | 6.55 | |
M8.0×1.25 | 7.31 | 7.38 | 7.44 | |
M10×1.5 | 9.18 | 9.25 | 9.32 | |
M10×1.25 | 9.31 | 9.38 | 9.44 | |
M12×1.75 | 11.04 | 11.12 | 11.21 | |
M12×1.25 | 11.31 | 11.38 | 11.44 | |
注：無(wú)槽絲攻之鉆孔徑,在上表所列之?dāng)?shù)值,由于被加工材料之材質(zhì)、硬度、形狀、尺寸@之影響,多少會(huì)有所變動(dòng)，因此參考上表之同時(shí),亦請(qǐng)?jiān)鰷p若干。 | ||||
美制螺紋滾造徑 | |||
規(guī)格 | 鉆孔徑 | ||
NPT | NPS | ||
使用絞刀時(shí) | 不用絞刀時(shí) | ||
1/16 -27 | 6.1 | 6.25 | 6.35 |
1/8 -27 | 8.33 | 8.43 | 8.74 |
1/4 -18 | 10.72 | 11.13 | 11.13 |
3/8 -18 | 14.27 | 14.27 | 14.68 |
1/2 -14 | 17.48 | 17.86 | 18.26 |
3/4 -14 | 22.63 | 23.01 | 23.42 |
1 -11-1/2 | 28.58 | 28.98 | 29.36 |
1-1/4-11-1/2 | 37.31 | 37.69 | 38.1 |
1-1/2-11-1/2 | 43.66 | 44.04 | 44.45 |
2 -11-1/2 | 55.58 | 55.96 | 56.36 |
英制螺紋滾造徑 | |
規(guī)格 | 滾造徑 |
W 3/16 - 24 | 4.08 - 4.05 |
W 1/4 - 20 | 5.51 - 5.46 |
W 5/16 - 18 | 7.01 - 6.95 |
W 3/8 - 16 | 8.48 - 8.41 |
W 7/16 - 14 | 9.92 - 9.85 |
W 1/2 - 12 | 11.31 - 11.24 |
W 9/16 -12 | 12.89 - 12.82 |
