Machinery's Handbook, 31st Edition
884
Milling Cutters American National Standard Stub-, Regular-, and Long-Length, Two-Flute, Medium Helix, Plain- and Ball-End, Double-End Miniature End Mills with 3 ⁄ 16 -Inch Diameter Straight Shanks ANSI/ASME B94.19-1997 (R2019)
L
L
W
W
W
D C
D W
D
D
C
3 16
3 16
Regular Length
Stub Length
Dia., C and D
Plain-End
Ball-End
Plain-End
Ball-End
W
L 2 2 2 2 2 2 2 2 2 2 2
W
L
W
L
W
L
… … … …
… … … …
2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 4
1 ⁄ 32 3 ⁄ 64 1 ⁄ 16 5 ⁄ 64 3 ⁄ 32 7 ⁄ 64
3 ⁄ 64 1 ⁄ 16 3 ⁄ 32
3 ⁄ 32 9 ⁄ 64 3 ⁄ 16
2
2 1 ⁄ 4
3 ⁄ 32
3 ⁄ 16
… …
… …
1 ⁄ 8
15 ⁄ 64
2
2 1 ⁄ 4
9 ⁄ 64 5 ⁄ 32 3 ⁄ 16 7 ⁄ 32
9 ⁄ 64
9 ⁄ 32
9 ⁄ 32
… …
… …
21 ⁄ 64
2
2 1 ⁄ 4
1 ⁄ 8
3 ⁄ 16
3 ⁄ 8
3 ⁄ 8
… …
… …
9 ⁄ 64 5 ⁄ 32
13 ⁄ 32
2
2 1 ⁄ 4
15 ⁄ 64
15 ⁄ 64
7 ⁄ 16
7 ⁄ 16
… …
… …
1 ⁄ 4
1 ⁄ 2 1 ⁄ 2
11 ⁄ 64
2
2 1 ⁄ 4
3 ⁄ 16
9 ⁄ 32
9 ⁄ 32
1 ⁄ 2
Long-Length, Plain-End
Long-Length, Plain-End
Dia., D
Dia., D
W
L
B a
W 7 ⁄ 8
L
B a
2 1 ⁄ 2 2 5 ⁄ 8 3 1 ⁄ 8
3 1 ⁄ 4 3 3 ⁄ 8
5 ⁄ 32 3 ⁄ 16
1 ⁄ 16 3 ⁄ 32
3 ⁄ 8 1 ⁄ 2 3 ⁄ 4
7 ⁄ 32 9 ⁄ 32
7 ⁄ 8
1
1
3 ⁄ 4
1 ⁄ 8
a B is the length below the shank. All dimensions are in inches. All cutters are high-speed steel. Right-hand cutters with right-hand helix are standard. Helix angle is greater than 19 degrees but not more than 39 degrees. Tolerances: On C and D , - 0.0015 inch for stub and regular length; + 0.003 inch for long length (if the shank is the same diameter as the cutting portion, however, then the tolerance on the cutting diameter is - 0.0025 inch.); on W , + 1 ⁄ 32 , - 1 ⁄ 64 inch; and on L , ± 1 ⁄ 16 inch. American National Standard Multiple-Flute, Helical Series End Mills with Brown & Sharpe Taper Shanks
L
W
D
Dia., D
Taper No.
Dia., D
Taper No.
W
L
W
L
7 7 7
2
9 9
4 15 ⁄ 16
1 1 ⁄ 4 1 1 ⁄ 2
7 1 ⁄ 4 7 1 ⁄ 2
1 ⁄ 2 3 ⁄ 4
15 ⁄ 16 1 1 ⁄ 4 1 5 ⁄ 8
5 1 ⁄ 4 5 5 ⁄ 8
2 1 ⁄ 4 2 3 ⁄ 4
1 9 All dimensions are in inches. All cutters are high-speed steel. Right-hand cutters with right-hand helix are standard. Helix angle is not less than 10 degrees. No. 5 taper is standard without tang; Nos. 7 and 9 are standard with tang only. Tolerances: On D , +0.005 inch; on W , ± 1 ⁄ 32 inch; and on L ± 1 ⁄ 16 inch. For dimensions of B & S taper shanks, see information given on page 1023 . 2 8
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