Kit contents

The Cal 36 Adjustable Torque Screwdriver and kit carrying case -  All bits included in the kit are one each.

Need the instruction set for the CAL 36 adjustable torque screwdriver? Scroll down to the bottom of the page and you will find the instruction set.

 Style  Size  Size  Size  Size  Size Size 


5/64 3/32 7/64 1/8  9/64  
PosiDriv #1 #2        
Slotted 0-1 3-4 5-6 8-10 12-14  
TORX T10 T15 T20 T25 T30 T40
Phillips #0 #1 #2 #3    
Square Recess 0 1 2 3    
Bit Holder 1/4 in          
Socket Adapter 1/4 in          

Need a parts print? In the table below, click on the part number of the drawing you want. The PDF will launch and you can download it. 

Cal 36K Adjustable Torque Screwdriver English and Metric Units of Measure

Part NumberModel DesignationLow RangeHigh RangeGraduationLengthWeightDrive Size
810568 CAL 36/4K 2 in-lb 36  in lb 2 in lb 7.8 in 0.5 lb 1/4” F Hex
810568 CAL 36/4K .2 Nm 4 Nm .2 Nm

19.81 cm

0.23 kg

1/4” F Hex

Need more information? 



The SR CAL-Series Adjustable Torque Screwdriver Kit is ideal for any application where:

  • High repeatability for low torque is needed.
  • Excellent durability and versatility are needed.
  • A wide variety of fastener types may be encountered.

High-precision operations such as electronic and electro-mechanical repair tend to use a lot of Cal 36/4 screwdrivers because of reliability and accuracy. Stranded wire applications in particular place a high value on the Cal 36/4.

Features and Characteristics - CAL 36/4 Torque Screwdriver

  • Bi-directional Accuracy of +/- 6% Indicated Value from 20% to 100% of capacity.
  • Meets or exceeds ASME B107.300-2010 and ISO 6789.
  • Many owners have experienced a service life of 15+ years
  • The operator cannot over-torque. Clutch releases automatically when desired torque has been achieved.
  • The scale on the shaft is marked in dual incrementation (in lb and Nm) on Cal 36/4, kgf•cm on CAL 40.
  • The magnifying lens improves the view of a clearly engraved scale.
  • To operate, simply dial torque setting and insert bit.  
  • Anti-backlash design enhances repeatability.
  • Comes with FREE calibration certificate from our ISO/IEC 17025 Accredited Calibration Laboratory. CAL 36/4 can be ordered with certification for English or Metric units of measure.


Sturtevant Richmont tools are proudly made Carol Stream, Illinois by highly capable hands.