Machining Tolerance・Inner diameter size
1.Tolerance of machining measurement
Without customer’s request, tolerance is made along JIS: middle grade (the 2nd grade.)
Details are below.
①Tolerance to the measurement except beveling part.(mm)
Grade |
Standard measurement categories |
||||||
0.5≦ ≦3.0 |
3.0< ≦6.0 |
6.0< ≦30.0 |
30.0< ≦120.0 |
120.0< ≦400 |
400< ≦1000 |
1000< ≦2000 |
|
Precise |
±0.05 |
±0.05 |
±0.1 |
±0.15 |
±0.2 |
±0.3 |
±0.5 |
Middle |
±0.1 |
±0.1 |
±0.2 |
±0.3 |
±0.5 |
±0.8 |
±1.2 |
Coarse |
±0.2 |
±0.3 |
±0.5 |
±0.8 |
±1.2 |
±2 |
±3 |
Very coarse |
－ |
±0.5 |
±1 |
±1.5 |
±2.5 |
±4 |
±6 |
②Tolerance to the measurement of beveling part (mm)
Grade |
Standard measurement categories |
||
0.5≦ ≦3.0 |
3.0< ≦6.0 |
6.0< |
|
Precise |
±0.2 |
±0.5 |
±1 |
Middle |
|||
Coarse |
±0.4 |
±1 |
±2 |
Very coarse |
|||
③Tolerance of the angle measurement (mm)
Grade |
Standard measurement categories |
||||
0.5≤ ≤3.0 |
3.0< ≤6.0 |
6.0< ≤30.0 |
30.0< ≤120.0 |
120.0< ≤400 |
|
Precise |
±1° |
±30' |
±20' |
±10' |
±5' |
Middle |
|||||
Coarse |
±1°30' |
±1° |
±30' |
±15' |
±10' |
Very coarse |
±3° |
±2° |
±1° |
±30' |
±20' |
2．Resin Hole Inner Diameter Measurement
Without customer’s request, tolerance is made along JIS: middle grade (the 2nd grade.)
If the customer dose use the molding insert nut and dose not request inner-diameter, molding pin measurement is refered to "min" on the below table.
Metric parallel-knurling thread
Thread Size |
2nd grade female-thread inner-diameter |
|
max |
min |
|
M1×0.25 |
0.785 |
0.729 |
M1.1×0.25 |
0.885 |
0.829 |
M1.2×0.25 |
0.985 |
0.929 |
M1.4×0.3 |
1.142 |
1.075 |
M1.6×0.35 |
1.321 |
1.221 |
M1.7×0.35 |
1.421 |
1.321 |
M1.8×0.35 |
1.521 |
1.421 |
M2.0×0.4 |
1.679 |
1.567 |
M2.2×0.45 |
1.839 |
1.713 |
M2.3×0.4 |
1.979 |
1.867 |
M2.5×0.45 |
2.138 |
2.013 |
M2.6×0.45 |
2.238 |
2.113 |
M3×0.5 |
2.599 |
2.459 |
※M3×0.6 |
2.440 |
2.280 |
M3.5×0.6 |
3.010 |
2.850 |
M4×0.7 |
3.422 |
3.242 |
※M4×0.75 |
3.326 |
3.106 |
M4.5×0.75 |
3.878 |
3.688 |
M5×0.8 |
4.334 |
4.134 |
※M5×0.9 |
4.170 |
3.930 |
M6×1.0 |
5.153 |
4.917 |
M7×1.0 |
6.153 |
5.917 |
M8×1.25 |
6.912 |
6.647 |
M9×1.25 |
7.912 |
7.647 |
M10×1.5 |
8.676 |
8.376 |
M11×1.5 |
9.676 |
9.376 |
M12×1.75 |
10.441 |
10.106 |
M14×2.0 |
12.210 |
11.835 |
M16×2.0 |
14.210 |
13.835 |
M18×2.5 |
15.744 |
15.294 |
M20×2.5 |
17.744 |
17.294 |