Decimal Conversion chart - Industrial Metal Supply

1 DRILL Decimal Decimal TA P DRILL Decimal Decimal TA P DRILL Decimal Decimal TAP inches SIZE inches MM SIZE inches SIZE inches MM SIZE inches SIZE inches MM SIZE 1/64 17 1/32 16 12-24 X 15 12-28 Y 60 14 13/32 59 13 Z 58 3/16 27/64

2 1/2-13 57 12 56 11 7/16 3/64 0-80 10 29/64 1/2-20 55 9 15/32 54 53 1-64.

3 72 8 31/64 9/16-12 1/16 M2 x .4 7 1/4-20 52 13/64 1/2 51 6

4 50 2-56, 64 5 33/64 9/16-18 49 4 17/32 5/8-11 48 3 1/4-28 35/64 5/64 3-48 7/32

5 47 2 9/16 1 37/64 5/8-18 46 3-56 A 45 15/64 19/32 44 39/64 43 4-40 B 5/8

6 42 4-48 C 3/32 4-48 D 41/64 41 1/4 E 21/32 3/4-10 40 F 5/16-18 39 G 43/64 38 5-40 17/64 11/16 3/4-16 37 5-44 H

7 45/64 36 6-32 I 5/16-24 7/64 23/32 35 J 47/64 34 K 33 6-40 9/32 3/4 32 L 49/64 7/8-9

8 M 25/32 31 19/64 1/8 N 51/64 30 5/16 3/8-16 13/16 7/8-14 29 8-32, 36 28 O 53/64 9/64 P 27/32 27 21/64 55/64

9 26 10-24 Q 3/8-24 25 R 7/8 1-8 24 11/32