Collets, Spindles & Tool Holders

  1. Collets, Spindles & Tool Holders
  2. Metric Collet Chart

Collet Sizes For U.S. Made Metric Taps

Size and Pitch use Collet Size Round Square

Floating and Pitch Compensating Tool Holders

M1.6 x .35
#6
.141
.110
 
M1.8 x .35
#6
.141
.110
 
M2 x .4
#6
.141
.110
 
M2.2 x .45
#6
.141
.110
 
M2.5 x .45
#6
.141
.110
 
M3 x .5
#6
.141
.110
 
M3.5 x .6
#6
.141
.110
 
 
 
 
 
 
M4 x .7
#8
.168
.131
 
 
 
 
 
 
M4.5 x .75
#10
.194
.152
 
M5 x .8
#10
.194
.152
 
 
 
 
 
 
M6 x 1.0
1/4
.255
.191
 
 
 
 
 
 
M7 x 1.0
5/16
.318
.238
 
M8 x 1.25
5/16
.318
.238
 
M8 x 1.0
5/16
.318
.238
 
 
 
 
 
 
M10 x 1.5
7/16,1/2 or 3/8
.323
.242
check tap
M10 x 1.25
7/16,1/2 or 3/8
.323
.242
Dimensions
 
 
 
 
 
M12 x 1.75
1/2
.367
.275
 
M12 x 1.25
1/2
.367
.275
 
 
 
 
 
 
M14 x 2.
9/16
.429
.322
 
M14 x 1.5
9/16
.429
.322
 
 
 
 
 
 
M16 x 2.
5/8
.480
.360
 
M16 x 1.5
5/8
.480
.360
 
 
 
 
 
 
M18 x 2.5
11/16
.542
.406
 
M18 x 1.5
11/16
.542
.406
 
 
 
 
 
 
M20 x 2.5
13/16
.652
.489
 
M20 x 1.5
13/16
.652
.489
 
 
 
 
 
 
M22 x 2.5
7/8
.697
.523
 
M22 x 1.5
7/8
.697
.523
 
 
 
 
 
 
M24 x 3.0
15/16
.760
.570
 
M24 x 2.0
15/16
.760
.570
 
 
 
 
 
 
M27 x 3.0
1-1/8
.896
.672
 
M27 x 2.0
1-1/8
.896
.672
 
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