Machinery's Handbook, 31st Edition
888 Milling Cutters American National Standard Stub- and Regular-Length, Four-Flute, Medium Helix, Double-End End Mills with Weldon Shanks ANSI/ASME B94.19-1997 (R2019)
L
W
W
D
S
D
Dia., D
Dia., D
Dia., D
S
W L
S
W L
S
W L
Stub Length
2 3 ⁄ 4 2 3 ⁄ 4
2 3 ⁄ 4 2 7 ⁄ 8 3 1 ⁄ 2 3 1 ⁄ 2 4 1 ⁄ 8 4 1 ⁄ 8 4 1 ⁄ 8 4 1 ⁄ 8
2 7 ⁄ 8
1 ⁄ 8
3 ⁄ 8 3 ⁄ 8
3 ⁄ 16
3 ⁄ 16 7 ⁄ 32
3 ⁄ 8 3 ⁄ 8
9 ⁄ 32
1 ⁄ 4
3 ⁄ 8
3 ⁄ 8
… … … …
5 ⁄ 32
15 ⁄ 64
21 ⁄ 64
Regular Length
5
3 1 ⁄ 16 3 1 ⁄ 8
1 3 ⁄ 8 1 5 ⁄ 8 1 5 ⁄ 8 1 7 ⁄ 8 1 7 ⁄ 8 1 7 ⁄ 8
1 ⁄ 8 a
3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8
3 ⁄ 8
11 ⁄ 32 3 ⁄ 8 a 13 ⁄ 32
3 ⁄ 8 3 ⁄ 8 1 ⁄ 2 1 ⁄ 2 1 ⁄ 2 1 ⁄ 2 5 ⁄ 8
3 ⁄ 4 3 ⁄ 4
5 ⁄ 8 a
5 ⁄ 8 3 ⁄ 4 3 ⁄ 4 7 ⁄ 8 7 ⁄ 8
5 5 ⁄ 8 5 5 ⁄ 8 6 1 ⁄ 8 6 1 ⁄ 8 6 3 ⁄ 8
5 ⁄ 32 a 3 ⁄ 16 a
7 ⁄ 16
11 ⁄ 16
1 1 1 1
3 1 ⁄ 4 3 1 ⁄ 4 3 3 ⁄ 8 3 3 ⁄ 8 3 1 ⁄ 2
1 ⁄ 2
3 ⁄ 4 a
7 ⁄ 32 1 ⁄ 4 a 9 ⁄ 32
9 ⁄ 16
7 ⁄ 16
13 ⁄ 16
5 ⁄ 8
15 ⁄ 32 1 ⁄ 2 a
7 ⁄ 8
1
1
11 ⁄ 16
5
… … … …
1 3 ⁄ 8
5 ⁄ 16 a
3 ⁄ 4
9 ⁄ 16
a In this size of regular mill, a left-hand cutter with a left-hand helix is also standard. 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 D , +0.003 inch (if the shank is the same diameter as the cutting portion, however, then the tolerance on the cutting diameter is - 0.0025 inch); on S , - 0.0001 to - 0.0005 inch; on W , ± 1 ⁄ 32 inch; and on L , ± 1 ⁄ 16 inch. American National Standard Regular-Length, Three- and Four-Flute, Medium Helix, Double-End End Mills with Weldon Shanks ANSI/ASME B94.19-1997 (R2019)
L
L
W
W
W
W
S
D
D
D
D
S
Dia., D
Dia., D
S
W
L
S
W
L
Three Flute
Four Flute
3 1 ⁄ 16
3 1 ⁄ 16
1 ⁄ 8
3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 1 ⁄ 2 1 ⁄ 2 5 ⁄ 8 5 ⁄ 8 3 ⁄ 4
3 ⁄ 8 1 ⁄ 2 5 ⁄ 8 3 ⁄ 4 3 ⁄ 4
1 ⁄ 8
3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 3 ⁄ 8 1 ⁄ 2 5 ⁄ 8 3 ⁄ 4 7 ⁄ 8
3 ⁄ 8 1 ⁄ 2 5 ⁄ 8 3 ⁄ 4 3 ⁄ 4
3 1 ⁄ 4 3 3 ⁄ 8 3 1 ⁄ 2 3 1 ⁄ 2 4 1 ⁄ 8 4 1 ⁄ 8
3 1 ⁄ 4 3 3 ⁄ 8 3 1 ⁄ 2 3 1 ⁄ 2 4 1 ⁄ 8 5 5 ⁄ 8 6 1 ⁄ 8 6 3 ⁄ 8 5
3 ⁄ 16
3 ⁄ 16
1 ⁄ 4
1 ⁄ 4
5 ⁄ 16
5 ⁄ 16
3 ⁄ 8
3 ⁄ 8 1 ⁄ 2 5 ⁄ 8 3 ⁄ 4 7 ⁄ 8
1 1
1
7 ⁄ 16
1 3 ⁄ 8 1 5 ⁄ 8 1 7 ⁄ 8 1 7 ⁄ 8
1 ⁄ 2
5 5
1 3 ⁄ 8 1 3 ⁄ 8 1 5 ⁄ 8 1 7 ⁄ 8
9 ⁄ 16
5 ⁄ 8 3 ⁄ 4
1
1
5 5 ⁄ 8 6 3 ⁄ 8
1 … 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 D , +0.0015 inch; on S , - 0.0001 to - 0.0005 inch; on W , ± 1 ⁄ 32 inch; and on L , ± 1 ⁄ 16 inch. 1 … … …
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