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• All mating surfaces precision ground
• Manufactured to the highest standards for maximum safety and long life
• Hardened for maximum longevity
Please make sure that the Retention Knob you order is the correct one for your machine. Using the wrong Retention Knob can cause damage to your machine spindle, the toolholder, and may create a safety hazard.
• All mating surfaces precision ground
• Manufactured to the highest standards for maximum safety and long life
• Hardened for maximum longevity
Please make sure that the Retention Knob you order is the correct one for your machine. Using the wrong Retention Knob can cause damage to your machine spindle, the toolholder, and may create a safety hazard.

Item # |
Degree |
Type |
d1 |
d2 |
d3 |
Length |
'T' |
Price |
Quantity | Add To Cart/Request Quote |
---|---|---|---|---|---|---|---|---|---|---|
![]() | ||||||||||
21005-45C | N/A 45° | N/A CAT50 Coolant-I | N/A 0.906" | N/A 0.669" | N/A 0.827" |
N/A Length 3.346" Length l1 1.772" Length l2 1.378" |
N/A 1" - 8" | $27.50 |
Add To Cart
Request Quote |
|
21005-60C | N/A 60° | N/A CAT50 Coolant-II | N/A 0.906" | N/A 0.669" | N/A 0.827" |
N/A Length 3.346" Length l1 1.772" Length l2 1.378" |
N/A 1" - 8" | $27.50 |
Add To Cart
Request Quote |
|
21005-90C | N/A 90° | N/A CAT50 Coolant-III | N/A 0.906" | N/A 0.669" | N/A 0.827" |
N/A Length 3.346" Length l1 1.772" Length l2 1.378" |
N/A 1" - 8" | $27.50 |
Add To Cart
Request Quote |
|
21008-15C | N/A 15° | N/A CAT50 DIN Coolant | N/A 1.101" | N/A 0.825" | N/A |
N/A Length 2.640" Length l1 1.338" Length l2 0.984" |
N/A 1" - 8" | $51.00 |
Add To Cart
Request Quote |
|
21005-C | N/A 45° | N/A CAT50 ANSI-C | N/A 1.140" | N/A 0.820" | N/A 0.820" |
N/A Length 2.30" Length l1 1.00" Length l2 0.700" |
N/A 1" - 8" | $27.50 |
Add To Cart
Request Quote |
|
21006-15C | N/A 15° | N/A CAT40 DIN Coolant | N/A 0.75" | N/A 0.55" | N/A 0.640" |
N/A Length 1.88" Length l1 1.024" Length l2 0.787" |
N/A 5/8" - 11" | $22.50 |
Add To Cart
Request Quote |
|
21007-15C | N/A 15° | N/A CAT40 DIN Coolant | N/A 0.75" | N/A 0.55" | N/A |
N/A Length 1.89" Length l1 1.028" Length l2 0.792" |
N/A 5/8" - 11" | $22.50 |
Add To Cart
Request Quote |
|
21148-C | N/A 15° | N/A CAT40 Coolant Mori-Seiki | N/A 0.747" | N/A 0.548" | N/A 0.641" |
N/A Length 2.004" Length l1 1.024" Length l2 0.787" |
N/A 5/8" - 11" | $89.00 |
Add To Cart
Request Quote |
|
21003-C | N/A 45° | N/A CAT40 ANSI-C | N/A 0.740" | N/A 0.490" | N/A 0.490" |
N/A Length 1.50" Length l1 0.640" Length l2 0.440" |
N/A 5/8" - 11" | $22.50 |
Add To Cart
Request Quote |
|
21003-45C | N/A 45° | N/A CAT40 Coolant-I | N/A 0.590" | N/A 0.394" | N/A 0.512" |
N/A Length 2.25" Length l1 1.266" Length l2 0.990" |
N/A 5/8" - 11" | $22.50 |
Add To Cart
Request Quote |
|
21003-60C | N/A 60° | N/A CAT40 Coolant-II | N/A 0.590" | N/A 0.394" | N/A 0.512" |
N/A Length 2.25" Length l1 1.266" Length l2 0.990" |
N/A 5/8" - 11" | $22.50 |
Add To Cart
Request Quote |
|
21003-90C | N/A 90° | N/A CAT40 Coolant-III | N/A 0.590" | N/A 0.394" | N/A 0.512" |
N/A Length 2.25" Length l1 1.266" Length l2 0.990" |
N/A 5/8" - 11" | $22.50 |
Add To Cart
Request Quote |
|
21003-45CSF | N/A 45° | N/A CAT40 Coolant-I SlimFIT | N/A 0.590" | N/A 0.394" | N/A 0.512" |
N/A Length 2.25" Length l1 1.266" Length l2 0.990" |
N/A 5/8" - 11" | $42.00 |
Add To Cart
Request Quote |
|
21003-60CSF | N/A 60° | N/A CAT40 Coolant-II SlimFIT | N/A 0.590" | N/A 0.394" | N/A 0.512" |
N/A Length 2.25" Length l1 1.266" Length l2 0.990" |
N/A 5/8" - 11" | $42.00 |
Add To Cart
Request Quote |
|
21003-90CSF | N/A 90° | N/A CAT40 Coolant-III SlimFIT | N/A 0.590" | N/A 0.394" | N/A 0.512" |
N/A Length 2.25" Length l1 1.266" Length l2 0.990" |
N/A 5/8" - 11" | $42.00 |
Add To Cart
Request Quote |
|
17836 | N/A 45° | N/A CAT40 ANSI w/metric thread | N/A 0.74" | N/A 0.49" | N/A 0.49" |
N/A Length 1.50" Length l1 0.63" Length l2 0.56" |
N/A M16X2 | $31.00 |
Add To Cart
Request Quote |