CNC router tools for woodworking, metal machining, plastic cutting and composite cutting with precision collets and toolholders
Think & Tinker, Ltd.
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Precision Nuts for Bosch 1618 Routers

NOTE: These nuts MUST be used with BOPG-1618-COLLETs and SPANNERS!
  Compatible with:
    Bosch families
  • 1320, B1350, B1450 (all configurations)
  • 1604A, 1606A, 1613, 1613EVS, 1613AEVS (all configurations)
  • 1617, 1617EVS,1618, 1618EVS, 1619, 1619EVS, 1649 (all configurations)
  • MRC23EVSK, MRF23EVS, MRP23EVS (all configurations)

    Hitachi family
  • M12VC, KM12VC (all configurations)


  • used in applications where speeds exceed 10,000 PRM
  • H.R.C. 45-52
  • balanced to G2.5 for 24,000 RPM's
  • TIR (with PC collet) < 0.0002" (0.005mm)
  • must be used with Think & Tinker BOPG-1618 collets  and spanners


  • improved collet centering and tool shank clamping
  • low noise operation
  • longer tool life
  • more accurate cutting and higher kerf fidelity
  • compatible with carbide microtools
  • low TIR means less wear and tear on spindle bearings
Bosch 1618 nut


  • purely tangential tightening torque
  • no radial nut distortion
  • low profile to accommodate step-shank tools
  • secure, no-slip design
  • must be used with Think & Tinker BOPG-1618 nuts
Bosch 1618  Spanner

Nut-Collet Crossection
Based on the  ER Spring-Collet / Nut architecture, the Think & Tinker family of precision collets and nuts was designed to bring the precision  and flexibility of expensive high frequency spindles to low-cost, consumer and professional grade routers.

The snap-together design and eccentric extraction ring prevents collets from sticking or binding in the tapered spindle bore. Tool removal is consistently easy.

The internal bore of each collet is preloaded to lightly grip the shank of a bit when it is inserted, preventing tools from falling out or shifting while the nut is being tightened.  Please read Working with ER Nuts and Collets.

The requirement that each collet be individually certified means that orders containing
Ultra-Precision and Extreme-Precision collets and collet-kits
may not meet our normal "within one busines day" shipping target


If your purchase is over US$50,
you save $5 in shipping!
    Sales Items    
Item # Description Unit Price Enter Qty.
BOPG-1618-NUT  Collet nut for Bosch 1618 compatible collets (balanced to G2.5 @ 24KRPM)   $19.95 
BOPG-1618-TLN  Talon spanner wrench (for BOPG-1618-NUT collet nut)   $12.95 
Enter the desired quantity (Enter Qty) then click on the "Add to Cart" Button.

Open Monday - Friday, 08:30 to 16:30 Mountain Time.

Most orders received before noon ship within one business day,
subject to credit approval and item availability.
Orders with different billing and shipping
addresses may be delayed for address verification.

Sales  719 488-9640
FAX:  866-453-8473
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Support  719 488-9640

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Updated 10/11/2016 5:28:06 PM