Stanley Proto Upgrades the Torque Wrench

New models have been re-engineered from the inside out.

Conyers, GA November 6, 2006 - Although the new line of Stanley® Proto® micrometer torque wrenches have the same look and feel that experienced users have come to expect, they have actually been totally redesigned from the inside out, and fitted with a new set of internal components.

The design and materials used in the wrench have been upgraded, and the construction fine-tuned so that tolerances remain accurate for 30,000 cycles under normal use. "We inspected every part used in the wrench," says Russ Dilts, the product manager in charge of the redesign. "Our aim has been to improve accuracy, consistency and reliability of performance."

One key improvement among many is in the wrench's internal spring. The spring's job is to hold the wrench's tang, tilt block and plunger in place until the set torque is reached, after which these components snap off center, providing a "click" that the user can hear and feel. Not surprisingly, worn springs are a common cause of a torque wrench losing its calibration. Proto has redesigned the internal spring so that it retains its memory.

All parts of the new wrenches are also made from high-grade steel, some of which has been heat treated for added durability. For instance, Proto now heat-treats tubes with additional carbon. This increases the surface hardness and reduces wear, which in turn increases accuracy. Internal bearings have also been added to reduce wear and improve accuracy.

Proto offers three series of micrometer torque wrenches, covering multiple applications from general manufacturing to precision.

-"C" series torque wrenches are designed to meet normal torque applications in industrial and manufacturing settings.

-"CX" series torque wrenches are calibrated for use where extreme precision and accuracy is required, such as in aerospace, aviation, and military applications.

-CXCERT series torque wrenches include documents certifying that the wrenches meet N.I.S.T. (National Institute of Standards and Technology) standards.

All wrenches also include the following features and benefits:

-Long handles mean that the user has to apply less force to achieve same amount of torque.
-A large grip area makes the wrench comfortable to use.
-Most scales include both metric and English numbers.
-A positive locking mechanism allows users to lock in the desired torque.
-The thin head design allows access in tight areas.

Proto offers ¼" - 1" drive in both ratcheting and fixed head styles torque wrenches, covering torque ranges from 10 in. lb. to 2000 ft. lb., and 16 - 800 Nm. Proto® micrometer torque wrenches are calibrated to +/- 3% of the torque reading clockwise and +/- 6% of the torque reading counter clockwise at 20% to 100% of the full scale.

Customers can special order micrometer wrenches certified to +/- 2% in one direction. Pre-set torque wrenches are also available on special request.

About Stanley-Proto

Professionals worldwide prefer Stanley® Proto® Industrial Tools for their outstanding quality, durability, and dependability. Developed according to strict ergonomic standards, they offer enhanced shock absorption and reduced slip, as well as designs that let professional users work faster and easier. Markets including auto-manufacturing plants, steel and airplane manufacturing, chemical plants, refineries, general manufacturing, transportation, and fleet maintenance for trucking, transit, and aircraft. For more information call 800-800-TOOL, or go to

Company Contact Information
2195 East View Parkway, Suite 103
Conyers, Georgia 30014
770- 787-3800

Please send sales leads to
Michelle Compton
Direct Fulfillment
4 Applegate Drive
Robbinsville, NJ 08691

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