extrusion tolerances

RMA Class	1	2	3
Drawing Designation	High Precision	Precision	Commercial
Dimensions in Inches	"E1"	"E2"	"E3"
	Tolerance	Tolerance	Tolerance
0.0 to 0.06	±0.006	±0.010	±0.015
0.06 to 0.10	±0.008	±0.014	±0.020
0.10 to 0.16	±0.010	±0.016	±0.027
0.16 to 0.25	±0.014	±0.020	±0.031
0.25 to 0.39	±0.016	±0.027	±0.039
0.39 to 0.63	±0.020	±0.031	±0.051
0.63 to 0.98	±0.027	±0.039	±0.063
0.98 to 1.57	±0.031	±0.051	±0.079
1.57 to 2.48	±0.39	±0.063	±0.098
2.48 to 3.94	±0.051	±0.079	±0.10

This table was taken from The Rubber Manufacturers Association's Rubber Handbook for Molded, Extruded, Lathe Cut and Cellular Products www.rma.org