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Torque Screwdriver (Micro-Adjustable), 5 - 40 in. lbs.

Item Number: 401SM    Supplier: SNAP-ON TOOLS


Adjustable models offer versatility for applications that require more than one torque value. These torque screwdrivers are particularly suites for the electronics industry and for instrument assembly work. A simple, cam-over design prevents over-tightening and possible damage to components.

Torque settings are easily and accurately changed with a unique adjusting knob and easy-to-read window scale. Adjusting the screwdriver is simple. Just pull out the adjusting knob to unlock, turn to the desired setting, then push the knob in until it clicks!

Positive locking knob makes accidental setting changes impossible. Automatic lock in counterclockwise direction makes fastener removal a snap.


  • Positive locking pull down adjustment knob
  • Trilobular comfort grip
  • Universal 1/4" hex bit holder with strong rare earth magnet
  • Cam-over torque limiting clutch
  • Slip resistant finish
  • Easy-to-read window scale
  • Lightweight
  • Automatic lock in counterclockwise direction for disassembly
  • Accuracy +/-6% of indicated value, CW, from 20% to 100% of full scale
  • Individually serialized with matching certificate of calibration traceable to N.I.S.T.
  • Meets or exceeds ASME B107.14 - 2004


  • GMB3042    Power Drive Adapter


1 year from date of purchase against defects in materials or workmanship.

Product Specifications

  • Weight: 10.8 oz.
  • Dimensions: 1.2" W x 5.1" L (30mm W x 130mm L)
  • Torque Range: 5 - 40 in. lb
  • Increments: 0.5 in. lb.