Atlantic Precision Resource

Standard Tolerence for Molded Rubber

STANDARD DIMENSIONAL TOLERANCE TABLES

MOLDED SOLID RUBBER PRODUCTS

DRAWING DESIGNATION "A3" COMMERCIAL

Drawing Designation "A3" Commercial tolerances indicate a "commercial" product and will
normally be used for most products.

"A1" High Precision Drawing Designation Dimensional Tolerance Table for Molded Rubber Products
Size (Millimeters) Size (Inches)
Above - Included Fixed Above - Included Fixed
0-10 +/-.10 0-.40 +/-.004
10-16 .13 .40-.63 .005
16-25 .16 .63-.1.00 .006
25-40 .20 1.00-1.60 .008
40-63 .25 1.60-2.50 .010
63-100 .32 2.50-4.00 .013
100-160 .40 4.00-6.30 .016

 

"A2" Precision Drawing Designation Dimensional Tolerance Table for Molded Rubber Products
Size (Millimeters) Size (Inches)
Above - Included Fixed Above - Included Fixed
0-10 +/-.16 0-.40 +/-.006
10-16 .20 .40-.63 .008
16-25 .25 .63-.1.00 .010
25-40 .32 1.00-1.60 .013
40-63 .40 1.60-2.50 .016
63-100 .50 2.50-4.00 .020
100-160 .63 4.00-6.30 .025
160 &Over X.004 6.30 & Over X.004

 

"A3" Commercial Drawing Designation Dimensional Tolerance Table for Molded Rubber Products
Size (Millimeters) Size (Inches)
Above - Included Fixed Above - Included Fixed
0-10 +/-.20 0-.40 +/-.008
10-16 .25 .40-.63 .010
16-25 .32 .63-.1.00 .013
25-40 .40 1.00-1.60 .016
40-63 .50 1.60-2.50 .020
63-100 .63 2.50-4.00 .025
100-160 .80 4.00-6.30 .032
160 &Over X.005 6.30 & Over X.004

 

"A4" Basic Drawing Designation Dimensional Tolerance Table for Molded Rubber Products
Size (Millimeters) Size (Inches)
Above - Included Fixed Above - Included Fixed
0-10 +/-.32 0-.40 +/-.013
10-16 .40 .40-.63 .016
16-25 .50 .63-.1.00 .020
25-40 .63 1.00-1.60 .025
40-63 .50 1.60-2.50 .032
63-100 1.00 2.50-4.00 .040
100-160 1.25 4.00-6.30 .050
160 &Over X.008 6.30 & Over X.008