Photo comingSpecifications below are JM Performance’s.


JM75022MHTHS
BT40 High Torque retention knob, 15° (also called 75°), M16, coolant-through, 9310H, O-ringsBT4015°M16Coolant-through
SpecificationsFrom JM Performance's product pages
- Taper
- BT40
- Style
- JIS B 6339 / DIN 69872 style (15°)
- read from the dimensions
- Angle
- 15° (also called 75°)
- Thread
- M16
- Flange to end of knob
- 1.024"
- Knob Ø
- .747"
- Neck Ø
- .549"
- Coolant
- Coolant-through
- with O-ring
- Socket
- RKW40
Machines
Machines this knob is listed for
BT40, 15° (also called 75°), JIS B 6339 / DIN 69872 style (15°).Verify firstListed as a guide only. Builders change knob specs between models, years and coolant options, so check your machine’s manual, or send us the make, model and serial number and we’ll confirm before you order. The wrong retention knob can let a holder pull out of the spindle.
We haven’t listed this knob for a machine yet. Send us your make, model and serial number and we’ll check: call the counter at 408-834-8656, or ask on a quote.
JM Performance’s own machine guide lists this knob for Mori Seiki (BT40). JM gives its machines as a reference only, not a guarantee.
Don’t see your machine? Call the counter at 408-834-8656 with the make, model and serial number and we’ll find the right knob.
JM Performance’s dimensions
- Knob Ø
- .747"
- Neck Ø
- .549"
- Flange to start of angle (L1)
- .787"
- Flange to end of knob (L2)
- 1.024"
- Flange thickness
- .157"
- Flange (shoulder) Ø
- .902"
- Pilot Ø
- .669"
- Wrench flats
- .745"
- Coolant hole Ø
- .236"
- Knob Side O-ring
- P-9
- Thread Side O-ring
- S-15
- Thread
- M16
- Tightening socket
- RKW40