Part Fabrication Tolerances

Linear Dimensions - ISO 2769-1
Tolerance Class Limit Deviations in mm for nominal dimension ranges
0.5-3 >3-6 >6-30 >30-120 >120-400 >400-1000 >1000-2000 >2000-4000
Fine ± 0.05 ± 0.05 ± 0.1 ± 0.15 ± 0.2 ± 0.3 ± 0.5 ± -
Medium ± 0.1 ± 0.1 ± 0.2 ± 0.3 ± 0.5 ± 0.8 ± 1.2 ± 2
Coarse ± 0.2 ± 0.3 ± 0.5 ± 0.8 ± 1.2 ± 2 ± 3 ± 4
Very Coarse ± - ± 0.5 ± 1 ± 1.5 ± 2.5 ± 4 ± 6 ± 8
Radii and Chamfers - ISO 2769-1
Tolerance Class Limit Deviations in mm for nominal dimension ranges
0.5-3 >3-6 >6
Fine ± 0.2 ± 0.5 ± 1
Medium
Coarse ± 0.4 ± 1 ± 2
Very Coarse
Angular Dimensions - ISO 2769-1
Tolerance Class Limit Deviations in mm for nominal dimension ranges
0-10 >10-50 >50-120 >120-400 >400
Fine ± 1° ± 0.5° ± 0.33° ± 0.167° ± 0.083°
Medium
Coarse ± 1.5° ± 1° ± 0.5° ± 0.25° ± 0.167°
Very Coarse ± 3° ± 2° ± 1° ± 0.5° ± 0.33°
Straightness and Flatness - ISO 2769-2
Tolerance Class Limit Deviations in mm for nominal dimension ranges
0-10 >10-30 >30-100 >100-300 >300-1000 >1000-3000
H ± 0.02 ± 0.05 ± 0.1 ± 0.2 ± 0.3 ± 0.4
K ± 0.05 ± 0.1 ± 0.2 ± 0.4 ± 0.6 ± 0.8
L ± 0.1 ± 0.2 ± 0.4 ± 0.8 ± 1.2 ± 1.6
Perpendicularity - ISO 2769-2
Tolerance Class Limit Deviations in mm for nominal dimension ranges
0-100 >100-300 >300-1000 >1000-3000
H ± 0.2 ± 0.3 ± 0.4 ± 0.5
K ± 0.4 ± 0.6 ± 0.8 ± 1
L ± 0.6 ± 1 ± 1.5 ± 2
Symmetry - ISO 2769-2
Tolerance Class Limit Deviations in mm for nominal dimension ranges
0-100 >100-300 >300-1000 >1000-3000
H ± 0.5
K ± 0.6 ± 0.8 ± 1
L ± 0.6 ± 1 ± 1.5 ± 2