Proto J6347 Digital Torque Wrench 3/4 Inch Drive

Product Description

The PROTO J6347 is a digital torque wrench built for high-demand fastening applications in industrial, mechanical, and heavy equipment service environments. Featuring a 3/4 inch drive and a fixed head, it delivers precise electronic torque measurement across a range of 60 to 600 foot-pounds (81 to 813 Nm). Graduations are set at 0.1 Nm and 1 foot-pound increments, giving technicians consistent, repeatable readings on critical fastener installations. At 12.37 pounds and 22 inches in overall length, the J6347 is sized for torque-critical work where analog tools fall short of the required accuracy.

The J6347 is suited for heavy-duty mechanical service work including drivetrain assembly, flange bolting, structural fastening, and equipment maintenance where torque verification is required by procedure or specification. The 3/4 inch drive accepts standard impact sockets and extensions, making it compatible with common shop setups across automotive, fleet, industrial, and construction service environments. This tool is a fit for professional mechanics, millwrights, and heavy equipment technicians who require a documented torque value rather than a click-style approximation.

Key Features

• Digital readout with 0.1 Nm and 1 foot-pound graduation for precise torque measurement
• Wide torque range: 60 to 600 foot-pounds (81 to 813 Nm) covers a broad set of fastener applications
• 3/4 inch fixed head drive for compatibility with standard heavy-duty sockets and extensions
• 22 inch overall length provides leverage for high-torque fastening tasks
• Maximum torque output of 7,200 inch-pounds for applications specified in that unit

Compatibility

Designed for use with standard 3/4 inch drive sockets and accessories across professional mechanical and industrial service applications.

Installation Notes

Digital torque wrenches should be used by qualified mechanical technicians following applicable fastener torque specifications from the equipment manufacturer or relevant service standard. Always zero the wrench and verify calibration before use on torque-critical fasteners. Do not use this wrench as a breaker bar or for loosening fasteners, as this can damage the internal electronics. Store the tool at a reduced torque setting when not in use to preserve internal load cell accuracy.