Machinery's Handbook, 31st Edition
Standard Tapers
1023
Table 10. Brown & Sharpe Taper Shanks
” 1 8
Reamer
K
S
Drill P
Plug Depth (Hole)
Plug Depth
D
” 1 16
T
d
t W
Arbors
Collets
L
” 1 8
Taper 1 per Ft. ” 3 4
Plug Depth, P
Dia. of Plug at Small End
Keyway from End of Spindle
Length of Key way a
Width of Key way
Length of Arbor Tongue
Diame ter of Arbor Tongue
Thick ness of Arbor Tongue
Taper per Foot (inch)
Mill. Mach. Stan dard Miscell.
Shank Depth
Num ber of Taper
B & S b Stan dard
D
K
S
L
W T
d
t
… …
.135 .166 .197 .197 .197 .228 .228 .260 .260 .260 .291 .322 .322 .322 .353 .385 .385 .447 .447 .447 .447 .447 .510 .510 .572 .572 .635
.170 .220 .282 .282 .282 .320 .320 .420 .420 .420 .460 .560 .560 .560 .710 .860 .860
.50200 .20000 .50200 .25000
1 c 2 c
1 3 ⁄ 16 1 1 ⁄ 2
15 ⁄ 16 1 3 ⁄ 16 1 1 ⁄ 2
15 ⁄ 16
3 ⁄ 8 1 ⁄ 2 5 ⁄ 8 5 ⁄ 8 5 ⁄ 8
3 ⁄ 16
1 ⁄ 8
… … 1 11 ⁄ 64 … … 1 15 ⁄ 32
1 ⁄ 4
5 ⁄ 32 3 ⁄ 16 3 ⁄ 16 3 ⁄ 16 7 ⁄ 32 7 ⁄ 32
1 7 ⁄ 8 2 1 ⁄ 8 2 3 ⁄ 8
5 ⁄ 16 5 ⁄ 16 5 ⁄ 16
3 c
.50200 .31250
… … 1 3 ⁄ 4 … … 2
1 23 ⁄ 32 1 31 ⁄ 32
… 1 13 ⁄ 64
… 1 1 ⁄ 4
1 21 ⁄ 32 2 3 ⁄ 32 2 3 ⁄ 16
11 ⁄ 16 11 ⁄ 16
11 ⁄ 32 11 ⁄ 32
4
.50240 .35000
… … 1 41 ⁄ 64
1 11 ⁄ 16
… 1 11 ⁄ 16
… 1 3 ⁄ 4
3 ⁄ 4 3 ⁄ 4 3 ⁄ 4 7 ⁄ 8
3 ⁄ 8 3 ⁄ 8 3 ⁄ 8
1 ⁄ 4 1 ⁄ 4 1 ⁄ 4
5
.50160 .45000
… … 2
2 7 ⁄ 16 2 9 ⁄ 16
1 15 ⁄ 16
… … 2 1 ⁄ 16 … … 2 19 ⁄ 64
2 1 ⁄ 8 2 3 ⁄ 8
6
.50329 .50000
2 7 ⁄ 8
7 ⁄ 16
9 ⁄ 32 5 ⁄ 16 5 ⁄ 16 5 ⁄ 16
… … 2 1 ⁄ 2
2 13 ⁄ 32
3 1 ⁄ 32 3 13 ⁄ 32 3 17 ⁄ 32
15 ⁄ 16 15 ⁄ 16 15 ⁄ 16
15 ⁄ 32 15 ⁄ 32 15 ⁄ 32
… … 2 25 ⁄ 32
7
.50147 .60000
2 7 ⁄ 8
… 3
… 2 29 ⁄ 32
… … 3 29 ⁄ 64
1
8 9
.50100 .75000 .50085 .90010
4 1 ⁄ 8 4 5 ⁄ 8 4 7 ⁄ 8
3 9 ⁄ 16
1 ⁄ 2
11 ⁄ 32
… 4
… 3 7 ⁄ 8
1 1 ⁄ 8 1 1 ⁄ 8
9 ⁄ 16 9 ⁄ 16
3 ⁄ 8 3 ⁄ 8
… … 4 1 ⁄ 8 … … 4 27 ⁄ 32
4 1 ⁄ 4
1.010 1.010 1.010 1.210 1.210 1.460 1.710 1.960 2.210 2.450
5
5 23 ⁄ 32 6 13 ⁄ 32 6 15 ⁄ 16 6 21 ⁄ 32 7 15 ⁄ 32 7 15 ⁄ 16 8 9 ⁄ 16 9 5 ⁄ 32 9 21 ⁄ 32
1 5 ⁄ 16 1 5 ⁄ 16 1 5 ⁄ 16 1 5 ⁄ 16 1 5 ⁄ 16 1 1 ⁄ 2
21 ⁄ 32 21 ⁄ 32 21 ⁄ 32 21 ⁄ 32 21 ⁄ 32
7 ⁄ 16 7 ⁄ 16 7 ⁄ 16 7 ⁄ 16 7 ⁄ 16
… 5 17 ⁄ 32
10
.51612 1.04465
… 5 11 ⁄ 16
… … 6 7 ⁄ 32
6 1 ⁄ 16
… … 5 25 ⁄ 32
5 15 ⁄ 16
11
.50100 1.24995
… 6 19 ⁄ 32 … 6 15 ⁄ 16
… 6 3 ⁄ 4
7 1 ⁄ 8
7 1 ⁄ 8
3 ⁄ 4
1 ⁄ 2
12 13 14 15 16 17 18
.49973 1.50010 .50020 1.75005 .50000 2.00000 .5000 2.25000 .50000 2.50000 .50000 2.75000
… … … … … … …
… … 6 1 ⁄ 4
… … 7 9 ⁄ 16
7 3 ⁄ 4 8 1 ⁄ 4 8 3 ⁄ 4 9 1 ⁄ 4 9 3 ⁄ 4
1 1 ⁄ 2
3 ⁄ 4
1 ⁄ 2
… 8 1 ⁄ 32
8 1 ⁄ 4
1 11 ⁄ 16 1 11 ⁄ 16
27 ⁄ 32 27 ⁄ 32 15 ⁄ 16
9 ⁄ 16 9 ⁄ 16
… … 8 17 ⁄ 32 … … 9
10 1 ⁄ 4
1 7 ⁄ 8
5 ⁄ 8
… … … … … … … … …
.50000 3.00000 10 1 ⁄ 4 … … … … … … … … … a Special lengths of keyway are used instead of standard lengths in some places. Standard lengths need not be used when keyway is for driving only and not for admitting key to force out tool. b “B & S Standard” Plug Depths are not used in all cases. c Adopted by American Standards Association.
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