Proto J6345A Digital Torque Wrench 3/8 in Drive

Product Description

The PROTO J6345A is a digital torque wrench built for precision fastening work in professional trade and industrial settings. Fitted with a 3/8 inch drive and a fixed head, it delivers electronic torque measurement across a range of 5 foot-pounds minimum to 600 inch-pounds maximum. Graduation is 0.10 in/lb, giving technicians fine resolution for critical fastening tasks. At 11 inches overall length and 2.14 pounds, it is compact enough for confined spaces while still providing a confident grip. Licensed HVAC techs, plumbers, mechanics, and electricians rely on tools like this when torque specifications must be documented or verified on the job.

The J6345A suits residential and light commercial service work wherever precise, repeatable torque is required. Typical applications include tightening flare fittings, refrigerant-side connections, electrical panel hardware, plumbing unions, and equipment access panel fasteners. The digital readout eliminates the guesswork of click-style wrenches and allows the technician to confirm applied torque in real time. It is equally useful in shop environments for assembly and QC checks on threaded fasteners across a variety of components.

Key Features

• 3/8 inch drive size fits standard sockets used across HVAC, plumbing, and electrical trades
• Digital readout with 0.10 in/lb graduation for precise torque confirmation
• Torque range: 5 ft/lb minimum to 600 in/lb maximum
• Fixed head design maintains consistent socket alignment during application
• 11 inch overall length suits both open and confined fastening locations
• Lightweight at 2.14 pounds for reduced hand fatigue during extended use

Compatibility

Designed as a standard 3/8 inch drive digital torque wrench compatible with 3/8 inch drive sockets and accessories across major socket set systems.

Installation Notes

A licensed or qualified technician should use this wrench in accordance with applicable codes and the equipment manufacturer's torque specifications. Before applying torque to any fitting or fastener on pressurized systems, shut off and isolate the system and relieve residual pressure per standard service procedures. Do not use this wrench as a breaker bar or for loosening fasteners, as impact loading can damage the digital torque sensor. Calibrate or verify calibration periodically per shop or job-site quality requirements.