Machinery's Handbook, 31st Edition
930 Reamers American National Standard Die-Makers’ Reamers ANSI/ASME B94.2-1995 (R2015)
B
A
Diameter
Length A B
Diameter
Length A B
Diameter
Length A B
Letter Size
Letter Size
Letter Size
Small End
Large End
Small End
Large End
Small End
Large End
G 0.135 0.158 3 1 3 ⁄ 4 H 0.145 0.169 3 1 ⁄ 4 1 7 ⁄ 8
O 0.250 0.296 5 3 1 ⁄ 2
AAA 0.055 0.070 2 1 ⁄ 4 1 1 ⁄ 8 AA 0.065 0.080 2 1 ⁄ 4 1 1 ⁄ 8 A 0.075 0.090 2 1 ⁄ 4 1 1 ⁄ 8 B 0.085 0.103 2 3 ⁄ 8 1 3 ⁄ 8 C 0.095 0.113 2 1 ⁄ 2 1 3 ⁄ 8 0.105 0.126 2 5 ⁄ 8 1 5 ⁄ 8 E 0.115 0.136 2 3 ⁄ 4 1 5 ⁄ 8 F 0.125 0.148 3 1 3 ⁄ 4 D
P Q R S T
0.275 0.327 5 1 ⁄ 2 4 0.300 0.358 6 4 1 ⁄ 2 0.335 0.397 6 1 ⁄ 2 4 3 ⁄ 4 0.370 0.435 6 3 ⁄ 4 5 0.405 0.473 7 5 1 ⁄ 4
I J
0.160 0.184 3 1 ⁄ 4 1 7 ⁄ 8 0.175 0.199 3 1 ⁄ 4 1 7 ⁄ 8 0.190 0.219 3 1 ⁄ 2 2 1 ⁄ 4
K
L 0.205 0.234 3 1 ⁄ 2 2 1 ⁄ 4 M 0.220 0.252 4 2 1 ⁄ 2
U 0.440 0.511 7 1 ⁄ 4 5 1 ⁄ 2
N … … … … … All dimensions in inches. Material is high-speed steel. These reamers are designed for use in diemaking, have a taper of 3 ⁄ 4 degree included angle or 0.013 inch per inch, and have 2 or 3 flutes. Reamers are standard with left-hand spiral flutes. Tip of reamer may have conical end. Tolerances: On length overall A and flute length B , ± 1 ⁄ 16 inch. 0.235 0.274 4 1 ⁄ 2 3 Taper Pin Reamers — Straight and Left-Hand Spiral Flutes, Squared Shank; and Left-Hand High-Spiral Flutes, Round Shank ANSI/ASME B94.2-1995 (R2015)
D
B
C
A
No. of Taper Pin Reamer
Diameter at Large End of Reamer (Ref.)
Diameter at Small End of Reamer (Ref.)
Overall Length of Reamer A
Length of Flute B
Length of Square C a
Diameter of Shank D
Size of Square a
0.0514 0.0666 0.0806 0.0966 0.1142 0.1302 0.1462 0.1638 0.1798 0.2008 0.2294 0.2604 0.2994 0.3540 0.4220 0.5050 0.6066 0.7216
0.0351 0.0497 0.0611 0.0719 0.0869 0.1029 0.1137 0.1287 0.1447 0.1605 0.1813 0.2071 0.2409 0.2773 0.3297 0.3971 0.4805 0.5799
…
…
1 5 ⁄ 8
8 ⁄ 0 b 7 ⁄ 0 6 ⁄ 0 5 ⁄ 0 4 ⁄ 0 3 ⁄ 0 2 ⁄ 0
25 ⁄ 32 13 ⁄ 16 15 ⁄ 16 1 3 ⁄ 16 1 5 ⁄ 16 1 5 ⁄ 16 1 9 ⁄ 16 1 11 ⁄ 16 1 11 ⁄ 16 1 15 ⁄ 16 2 5 ⁄ 16 2 9 ⁄ 16 2 13 ⁄ 16 3 11 ⁄ 16 4 7 ⁄ 16 5 3 ⁄ 16 6 1 ⁄ 16 6 13 ⁄ 16
1 ⁄ 16 5 ⁄ 64 3 ⁄ 32 7 ⁄ 64 9 ⁄ 64 5 ⁄ 32 1 ⁄ 8
0.060 0.070 0.080 0.095 0.105 0.115 0.130 0.140 0.150 0.175 0.200 0.235 0.270 0.305 0.330 0.420 0.470
1 13 ⁄ 16 1 15 ⁄ 16 2 3 ⁄ 16 2 5 ⁄ 16 2 5 ⁄ 16 2 9 ⁄ 16 2 15 ⁄ 16 2 15 ⁄ 16 3 3 ⁄ 16 3 11 ⁄ 16 4 1 ⁄ 16 4 5 ⁄ 16 5 7 ⁄ 16 6 5 ⁄ 16 7 3 ⁄ 16 8 5 ⁄ 16 9 5 ⁄ 16
5 ⁄ 32 5 ⁄ 32 5 ⁄ 32 5 ⁄ 32 5 ⁄ 32 7 ⁄ 32 7 ⁄ 32 7 ⁄ 32 1 ⁄ 4 1 ⁄ 4 1 ⁄ 4 3 ⁄ 8 3 ⁄ 8 5 ⁄ 16 7 ⁄ 16 9 ⁄ 16
0 1 2 3 4 5 6 7 8 9
11 ⁄ 64
3 ⁄ 16
13 ⁄ 64 15 ⁄ 64 17 ⁄ 64 23 ⁄ 64 13 ⁄ 32 5 ⁄ 16
7 ⁄ 16 9 ⁄ 16
10
5 ⁄ 8
5 ⁄ 8
a Not applicable to high-spiral flute reamers. b Not applicable to straight and left-hand spiral-fluted, squared-shank reamers. All dimensions in inches. Reamers have a taper of 1 ⁄ 4 inch per foot and are made of high-speed steel. Straight flute reamers of carbon steel are also standard. The number of flutes is as follows; 3 or 4, for 7 ⁄ 0 to 4 ⁄ 0 sizes; 4 to 6, for 3 ⁄ 0 to 0 sizes; 5 or 6, for 1 to 5 sizes; 6 to 8, for 6 to 9 sizes; 7 or 8, for the 10 size in the case of straight- and spiral-flute reamers; and 2 or 3, for 8 ⁄ 0 to 8 sizes; 2 to 4, 32 inch. On shank diameter D , - .001 to - .005 inch for straight- and spiral-flute reamers and - .0005 to - .002 inch for high-spiral flute reamers. On size of square, - .004 inch for 7 ⁄ 0 to 7 sizes and - .006 inch for 8 to 10 sizes. for the 9 and 10 sizes in the case of high-spiral flute reamers. Tolerances: On length overall A and flute length B , ± 1 ⁄ 16 inch. On length of square C , ± 1 ⁄
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