• E0105003 Reversible Tapping Heads JSN20
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 Reversible Tapping Heads Description:
  • Chatter-free clutch has positive engagement which allows for a smoother, more accurate tapping operation.
  • Unique double spring mechanism produces automatic feed and cushion drive.
  • preset torque control permits easy operation of tap brake torque control.
  • For depth control set machine travel to feed up to the difference between tapping depth and clockwise expansion.
  • Guaranteed depth control to ±0.004".
  • Radial float is self-centering to compensate for hole center misalignment to 0.005".
  • Two rubberflex collets  and two Morse-JT arbors included with each head.
  • JSN7 arbor: MT1-JT6, MT3-JT6; JSN12 arbor: MT3-JT6, MT4-JT6; JSN20 arbor: MT3-M20, MT4-M20.


  Collet No. Tap Capacity
JSN7 R10 #0-#10
  R11 #10-1/4
JSN12 R20 #4-1/4
  R21 1/4-1/2
JSN20 R30 5/16-5/8
  R31 9/16-3/4
Mount Tapping Cap. In Steel Max. Suggested RPM Gear Ratio Clockwise Compress inch Clockwise Expansion inch Collet Ref.#
JT6 No.0-1/4", M2-M7 1,500 1:1.6 0.197 0.14 R10,R11
JT6 No.8-1/2", M5-M12 1,000 1:1.75 0.197 0.16 R20,R21
20Mx2.5 5/16-3/4", M8--M20 1/8,1/4 NPT 600 1:1.7 0.236 0.24 R30,R31

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E0105003 Reversible Tapping Heads JSN20

  • Brand: Bolton Tools
  • Model #: E0105003
  • Condition: New
  • US Shipping: $39.00
  • Before: $459.67
  • Now: $365.39

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Tags: tool holder, shell mill holder