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Pre Ream Drill Size

Pre Ream Drill for 3% Ream

Reamer Diameter
Drill for 3% Ream
Decimal Equivalent
1in (1.0000)
31/32
0.9700
63/64 (0.9844)
61/64
0.9549
31/32 (0.9688)
15/16
0.9397
61/64 (0.9531)
59/64
0.9245
15/16 (0.9375)
29/32
0.9094
59/64 (0.9219)
57/64
0.8942
29/32 (0.9062)
7/8
0.8790
57/64 (0.8906)
55/64
0.8639
7/8 (0.8750)
27/32
0.8488
55/64 (0.8594)
53/64
0.8336
27/32 (0.8438)
13/16
0.8185
53/64 (0.8281)
51/64
0.8034
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