螺紋不怕折斷，絲攻折斷后可能造成工件報廢的風險，螺紋即使人為折斷也容易取。
螺紋銑刀的加工效率遠高于絲攻；
盲孔絲攻不可攻到底部，螺紋銑刀可以。
除了M和UN之外，一把螺紋銑刀可加工不同旋向的內外螺紋，絲攻不行。
相同螺距不同螺紋尺寸的螺紋孔，絲攻需要更換幾支，螺紋銑刀可通用。
螺紋孔徑第一次通規(guī)不過時，螺紋銑刀可通過刀補修正，絲攻則不行，工件只有報廢。
螺紋銑刀成本更低，雖然單支螺紋銑刀貴過絲攻，但是算到單個螺紋成本比絲攻低很多。
螺紋刀具精度更高，螺紋銑刀以刀補實現(xiàn)精度，可以選擇客戶需要的精度等級。
光潔度好，螺紋銑刀銑出來的牙光潔度優(yōu)于絲攻。
螺紋銑刀的耐用度是絲錐的十多倍甚至數(shù)十倍，減少換刀具的工時浪費。
在較大螺紋孔加工時絲攻無法企及，螺紋銑刀可瞬時實現(xiàn)。
螺紋銑刀切削為粉末狀短屑，無纏刀可能；絲攻切削為螺旋狀鐵屑，容易纏刀。
螺紋銑刀非全齒接觸切削，機床負載和切削力都比絲攻小。
裝夾簡單，絲攻需要柔性攻絲刀柄；螺紋銑刀可用ER HSK 液壓 熱漲等刀柄。
一把可舍式螺紋銑刀桿可同時更換公制.美制.英制等刀片，經(jīng)濟型好。
螺紋銑刀及刀具的相關參數(shù)：
公制普通螺紋
螺 絲 | 下 孔 徑 | 參 考 | |||||||
標 稱 | 100% | 1級螺紋 | 2級螺紋 | 3級螺紋 | 最 小 尺 寸 | 最 大 尺 寸 | |||
1級 | 2級 | 3級 | |||||||
M1 X0.25 | 0.73 | 0.77(85%) | 0.78(80%) | 0.729 | 0.774 | 0.785 | |||
M1.1X0.25 | 0.83 | 0.87(85%) | 0.88(80%) | 0.829 | 0.874 | 0.885 | |||
M1.2X0.25 | 0.93 | 0.97(85%) | 0.98(80%) | 0.929 | 0.974 | 0.985 | |||
M1.4X0.3 | 1.08 | 1.12(85%) | 1.14(80%) | 1.075 | 1.128 | 1.142 | |||
M1.6X0.35 | * | 1.30(80%) | 1.32(75%) | 1.221 | 1.301 | 1.321 | |||
M1.7X0.35 | * | 1.40(80%) | 1.42(75%) | 1.321 | 1.401 | 1.421 | |||
M1.8X0.35 | * | 1.50(80%) | 1.52(75%) | 1.421 | 1.501 | 1.521 | |||
M2 X0.4 | 1.57 | 1.65(80%) | 1.65(75%) | 1.567 | 1.657 | 1.679 | |||
M2.2X0.45 | * | 1.81(80%) | 1.83(75%) | 1.713 | 1.813 | 1.838 | |||
M2.3X0.4 | 1.87 | 1.95(80%) | 1.97(75%) | 1.867 | 1.957 | 1.979 | |||
M2.5X0.45 | * | 2.11(80%) | 2.13(75%) | 2.013 | 2.113 | 2.138 | |||
M2.6X0.45 | 2.11 | 2.21(85%) | 2.22(75%) | 2.113 | 2.213 | 2.238 | |||
* | M3 X0.6 | 2.35 | 2.42(90%) | 2.42(90%) | 2.42(90%) | 2.280 | 2.420 | 2.440 | 2.440 |
M3 X0.5 | 2.46 | 2.57(80%) | 2.59(75%) | 2.62(70%) | 2.459 | 5.571 | 2.599 | 2.639 | |
M3.5X0.6 | 2.85 | 2.95(85%) | 3.01(75%) | 3.05(70%) | 2.850 | 2.975 | 3.010 | 3.050 | |
* | M4 X0.75 | 3.19 | 3.23(95%) | 3.31(85%) | 3.31(85%) | 3.106 | 3.256 | 3.326 | 3.326 |
M4 X0.7 | * | 3.36(85%) | 3.39(80%) | 3.43(75%) | 3.242 | 3.382 | 3.422 | 3.466 | |
M4.5X0.75 | 3.69 | 3.81(85%) | 3.85(80%) | 3.89(75%) | 3.688 | 3.838 | 3.878 | 3.924 | |
* | M5 X0.9 | 4.03 | 4.07(95%) | 4.17(85%) | 4.17(85%) | 3.930 | 4.090 | 4.170 | 4.170 |
M5 X0.8 | * | 4.26(85%) | 4.31(80%) | 4.35(75%) | 4.134 | 4.294 | 4.334 | 4.384 | |
* | M5.5X0.9 | 4.53 | 4.57(95%) | 4.67(85%) | 4.67(85%) | 4.430 | 4.590 | 4.670 | 4.670 |
M6 X1 | 4.92 | 5.08(85%) | 5.13(80%) | 5.19(75%) | 4.917 | 5.107 | 5.153 | 5.217 | |
M7 X1 | 5.92 | 6.08(85%) | 6.13(80%) | 6.19(75%) | 5.917 | 6.107 | 6.153 | 6.217 | |
M8 X1.25 | 6.65 | 6.85(85%) | 6.85(85%) | 6.92(80%) | 6.647 | 6.859 | 6.912 | 6.982 | |
M9 X1.25 | 7.65 | 7.85(85%) | 7.85(85%) | 7.92(80%) | 7.647 | 7.859 | 7.912 | 7.982 | |
M10 X1.5 | 8.38 | 8.54(90%) | 8.62(85%) | 8.70(80%) | 8.376 | 8.612 | 8.676 | 8.751 | |
M11 X1.5 | 9.38 | 9.54(90%) | 9.62(85%) | 9.70(80%) | 9.376 | 9.612 | 9.676 | 9.751 | |
M12 X1.75 | * | 10.30(90%) | 10.40(85%) | 10.50(80%) | 10.106 | 10.371 | 10.441 | 10.531 | |
