torque screwdrivers


Lindstrom ESD-Safe Torque Screwdrivers Lindstrom’s ESD-safe torque screwdrivers are designed to give you great precision in an easy-to-use tool. All-Spec Industries carries two types of Lindstrom torque drivers, pre-set and micro-adjustable. The pre-set torque drivers allow you to select a specific tension to be set by the factory while allowing you to adjust the tension on the inside of the tool. The micro-adjustment models allow for instant changes, so you can modify your torque settings fast and easily whenever needed. Both come with a factory calibration certificate traceable to NIST.


  • Lightweight rugged construction
  • Cam-over torque limiting design virtually eliminates over-application of force
  • Permanently lubricated internal mechanism never needs to be oiled
  • Non-magnetic spring-loaded bit holder helps avoid damaging sensitive equipment and components
  • Lindstrom digital torque tester available to check values or calibrate torque screwdrivers and wrenches
  • Certified to industry standards:
    • ASME B107.14-2004
    • ISO 6789.2003(E)




  • Drive size: ¼” hex
  • Torque range: Many available, from 10-100 in/oz to 5-40 in/lb
  • Accuracy: +/- 6%


(special thanks to Mike Billings at Lindstrom for guest blogging the content below!)

Most torque testers are expensive and complicated or cheap with limited utility. It doesn’t have to be that way. Lindstrom now offers one that is affordable, accurate and easy to use over a wide range of torque devices and torque settings.

When ALL-SPEC customers hear Lindstrom mentioned, they probably think of our “little yellow cutter” or the pioneering ergonomic design of our RX Series ERGO cutters and pliers. But one of our most popular tool lines is our torque screwdriver range, both micro-adjustable and preset. People love the elegant yet tough tools for their consistently good results.

DTT Lindstrom Torque Tester For years, customers have asked us if we make a tester for use with torque devices, one as good as our screwdrivers. Back then, all we made were hand tools. Now, we make what just may be the best little Digital Torque Tester™ available: DTT-501-EZ.

Like our torque screwdrivers, DTT will be prized for its accuracy and repeatability. They share the same rugged design and tough powdercoat finish and both were created by the Snap-on Industrial Brand engineers who design torque wrenches and professional calibration systems for our company. So, we were able to pack a ton of features into these affordable torque testers. With a range of 20 to 800 inch ounces, the DTT can execute a quick peak-value check on torque devices – wrenches, screwdrivers, T-handles and even electric-drive on low RPM – to verify values – or perform a three-stage calibration sequence that adheres to A.S.M.E. standards. Visual and audio cues show users as torque values change during testing. Test data can be instantly downloaded to any text or spreadsheet program.

DTT Torque Tester in Case As implied in its name, DTT-501-EZ is easy to use. The touch screen has an intuitive design that makes it simple to navigate from opening screen to the type of test desired. Typical torque units (, Nm, kgcm, etc.) are supported in both SAE and International Standard. Lindstrom preprogrammed the DTT to automatically step through settings of 20%, 60% and 100% to test adjustable torque devices in conformance with A.S.M.E. B107-28-2005. Calibrations are traceable to N.I.S.T. standards and Lindstrom DTT-501-EZ is accurate to +/- 0.5% within specified range.

The Lindstrom Digital Torque TesterTM is an affordable and versatile torque testing machine that can be mounted on a wall, bench-top or mobile test cart. All DTT are sold as a complete kit including AC/DC power supply, USB cable, hex adapter, six-cell battery pack and carrying case.

All-Spec Industries is now carrying the Lindstrom DTT-501-EZ!

All-Spec Industries is an authorized distributor of Lindstrom tools. Lindstrom is one of the oldest continuous producers of hand tools still around today; they’ve been producing precision pliers and cutters since 1856.


What is Torque?

by Andy on July 1, 2011

Torque WrenchTorque is defined as a force which creates a rotation of an object around an axis.  The basic formula is the length of the tool multiplied by the force exerted which creates the torque. A good example of torque is using a wrench to tighten bolts. Torque is often measured in inch pounds, inch ounces, foot pounds and Newton meters.

A torque wrench is the the basic tool used to apply torque to a nut, bolt or other type of fastener.   There are varying kinds of torque wrenches including the simple beam wrench, click wrench, No-Hub wrench, electronic torque wrench, hydraulic torque wrench and deflecting beam wrench. Torque wrenches are important in order to meet the specified torque for a particular application. This is crucial because over tightening fasteners can damage an item or break the fastener itself. Torque wrenches also ensure that the bolted surfaces have the least amount of wear for the longest life possible.

In addition to torque wrenches, All-Spec also carries torque screwdrivers, insulated torque wrenches, torque power drivers and torque driver handles.