ER SERIES TAP COLLETS ER Tap Collets feature a unique design that incorporates an internal square drive with our popular ER Series collets. The square drive matches the tap square, providing a tight fit for all rigid tapping applications.
Tap Collets Part Number
Tap Inch Size Tap Metric Size
L1
Ø
ET25-168 ET25-194 ET25-220 ET25-255 ET25-318 ET25-323 ET25-367 ET25-381 ET25-429 ET25-437 ET25-480 ET32-168 ET32-194 ET32-220 ET32-255 ET32-318 ET32-323 ET32-367 ET32-381 ET32-429 ET32-437 ET32-480 ET32-542 ET32-562 ET32-590 ET32-652
#8, 5/32” #10, 3/16” #12, 7/32” #14, 1/4”
M4
15.0mm 15.0mm 15.0mm 20.0mm 20.0mm 20.0mm 25.0mm 20.0mm 25.0mm 18.0mm 25.0mm 15.0mm 15.0mm 15.0mm 20.0mm 20.0mm 20.0mm 25.0mm 20.0mm 25.0mm 18.0mm 25.0mm 30.0mm 18.0mm 30.0mm 30.0mm
0.168 0.194 0.220 0.255 0.318 0.323 0.367 0.381 0.429 0.437 0.480 0.168 0.194 0.220 0.255 0.318 0.323 0.367 0.381 0.429 0.437 0.480 0.542 0.562 0.590 0.652
0.131 0.152 0.165 0.191 0.238 0.242 0.275 0.286 0.322 0.328 0.360 0.131 0.152 0.165 0.191 0.238 0.242 0.275 0.286 0.322 0.328 0.360 0.406 0.421 0.442 0.489
M4.5, M5
-
M6, M6.5
5/16” 7/16” 1/2” 3/8” 9/16”
M7, M6.5, M8
-
M12, M12.5
M10 M14
1/8” NPT(L)
-
5/8”
M16
#8, 5/32” #10, 3/16” #12, 7/32” #14, 1/4”
M4
M4.5, M5
-
M6, M6.5 M7, M6.5
5/16” 7/16” 1/2” 3/8” 9/16”
-
M12, M12.5
M10 M14 M16 M18 -
1/8” NPT
5/8”
11/16”
1/4” NPT
- -
3/4”
13/16”
M20
Tap Coolant Collets Part Number
Tap Inch Size Tap Metric Size
L1 25 25 25 27 25 30 30
Ø
ET25-255(C) ET25-318(C) ET25-323(C) ET25-367(C) ET25-381(C) ET25-429(C) ET25-480(C) ET32-255(C) ET32-318(C) ET32-323(C) ET32-367(C) ET32-381(C) ET32-429(C) ET32-480(C) ET32-542(C) ET32-590(C) ET32-652(C)
#14, 1/4”
M6, M6.5 M7, M6.5
0.255 0.318 0.323 0.367 0.381 0.429 0.480 0.255 0.318 0.323 0.367 0.381 0.429 0.480 0.542 0.590 0.652
0.191 0.238 0.242 0.275 0.286 0.322 0.360 0.191 0.238 0.242 0.275 0.286 0.322 0.360 0.406 0.442 0.489
5/16” 7/16” 1/2” 3/8” 9/16” 5/8” 5/16” 7/16” 1/2” 3/8” 9/16” 5/8” 11/16”
-
M12, M12.5
M10 M14 M16
#14, 1/4”
M6, M6.5 M7, M6.5
25.0mm 25.0mm 25.0mm 27.0mm 25.0mm 30.0mm 30.0mm 35.0mm 35.0mm 35.0mm
-
M12, M12.5
M10 M14 M16 M18
3/4”
-
13/16”
M20
Note: Seals up to maximum coolant pressure of 1000 PSI.
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