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Standard Straight Shank Straight Flute Chucking Reamer Dimension Table<br />
High Speed Steel<br />
Decimal # of Flute Overall Shank<br />
Decimal # of Flute Overall Shank<br />
Size<br />
Size<br />
Equiv. Flutes Length Length Dia.<br />
Equiv. Flutes Length Length Dia.<br />
M 0.2950 6 1.1/2" 6" .2792" Z 0.4130 6 1.3/4" 7" .3730"<br />
7.5mm 0.2953 6 1.1/2" 6" .2792" 10.5mm 0.4134 6 1.3/4" 7" .3730"<br />
19/64" 0.2969 6 1.1/2" 6" .2792" 27/64" 0.4219 6 1.3/4" 7" .3730"<br />
N 0.3020 6 1.1/2" 6" .2792" 11mm 0.4331 6 1.3/4" 7" .3730"<br />
D/P 0.3105 6 1.1/2" 6" .2792" D/P 0.4355 6 1.3/4" 7" .3730"<br />
O/U 0.3115 6 1.1/2" 6" .2792" O/U 0.4365 6 1.3/4" 7" .3730"<br />
D/P 0.3120 6 1.1/2" 6" .2792" D/P 0.4370 6 1.3/4" 7" .3730"<br />
5/16" 0.3125 6 1.1/2" 6" .2792" 7/16" 0.4375 6 1.3/4" 7" .3730"<br />
O/U 0.3135 6 1.1/2" 6" .2792" O/U 0.4385 6 1.3/4" 7" .3730"<br />
8mm 0.3150 6 1.1/2" 6" .2792" 11.5mm 0.4528 6 1.3/4" 7" .3730"<br />
O 0.3160 6 1.1/2" 6" .2792" 29/64" 0.4531 6 1.3/4" 7" .3730"<br />
P 0.3230 6 1.1/2" 6" .2792" 15/32" 0.4688 6 1.3/4" 7" .3730"<br />
21/64" 0.3281 6 1.1/2" 6" .2792" 12mm 0.4724 6 1.3/4" 7" .4355"<br />
Q 0.3320 6 1.1/2" 6" .2792" 31/64" 0.4844 6 2" 8" .4355"<br />
8.5mm 0.3346 6 1.1/2" 6" .2792" 12.5mm 0.4921 6 2" 8" .4355"<br />
R 0.3390 6 1.1/2" 6" .2792" D/P 0.4980 6 2" 8" .4355"<br />
11/32" 0.3438 6 1.1/2" 6" .2792" O/U 0.4990 6 2" 8" .4355"<br />
S 0.3480 6 1.3/4" 7" .3105" D/P 0.4995 6 2" 8" .4355"<br />
9mm 0.3543 6 1.3/4" 7" .3105" 1/2" 0.5000 6 2" 8" .4355"<br />
T 0.3580 6 1.3/4" 7" .3105" O/U 0.5010 6 2" 8" .4355"<br />
23/64" 0.3594 6 1.3/4" 7" .3105" 13mm 0.5118 6 2" 8" .4355"<br />
U 0.3680 6 1.3/4" 7" .3105" 33/64" 0.5156 6 2" 8" .4355"<br />
D/P 0.3730 6 1.3/4" 7" .3105" 17/32" 0.5312 6 2" 8" .4355"<br />
9.5mm 0.3740 6 1.3/4" 7" .3105" 13.5mm 0.5315 6 2" 8" .4355"<br />
O/U 0.3740 6 1.3/4" 7" .3105" 35/64" 0.5469 6 2" 8" .4355"<br />
D/P 0.3745 6 1.3/4" 7" .3105" 14mm 0.5512 6 2" 8" .4355"<br />
3/8" 0.3750 6 1.3/4" 7" .3105" 9/16" 0.5625 6 2" 8" .4355"<br />
O/U 0.3760 6 1.3/4" 7" .3105" 14.5mm 0.5709 6 2" 8" .4355"<br />
V 0.3770 6 1.3/4" 7" .3105" 37/64" 0.5781 6 2" 8" .4355"<br />
W 0.3860 6 1.3/4" 7" .3105" 15mm 0.5906 6 2" 8" .4355"<br />
25/64" 0.3906 6 1.3/4" 7" .3105" 19/32" 0.5938 6 2" 8" .4355"<br />
10mm 0.3937 6 1.3/4" 7" .3105" 39/64" 0.6094 6 2" 8" .4355"<br />
X 0.3970 6 1.3/4" 7" .3105" 15.5mm 0.6102 8 2.1/4" 9" .5620"<br />
Y 0.4040 6 1.3/4" 7" .3105" 5/8" 0.6250 8 2.1/4" 9" .5620"<br />
13/32" 0.4062 6 1.3/4" 7" .3105" 16mm 0.6299 8 2.1/4" 9" .5620"<br />
V 1.0 – November 2011 Page 112
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