Proto J5112 Torque Adapter Wrench 9/16 Inch 12-point

Product Description

The PROTO J5112 is a torque adapter wrench designed for use with fasteners in applications where a standard torque wrench cannot reach or seat properly. The box end head measures 9/16 inches in diameter with a 17/64-inch head thickness, making it well suited for tight-clearance work. Overall length is 2-11/16 inches. Constructed from steel with a chrome-plated finish, the J5112 resists corrosion and handles repeated use in shop and field environments. It is tether capable, supporting tool accountability requirements common in industrial and commercial maintenance settings. Licensed trades including HVAC technicians, industrial mechanics, and pipefitters will find this adapter useful for torquing fasteners in confined spaces.

The J5112 is a straight 0-degree offset box end adapter intended for general fastener work. Its compact 2-11/16-inch overall length allows it to fit into spaces where a full-size wrench or socket drive cannot. The 12-point box end engages fastener heads with six contact positions per rotation, reducing the arc needed to advance the wrench. It meets the AS954E S3.8.1 standard applicable to torque adapter specifications. This adapter is appropriate for light industrial, commercial, and mechanical service work wherever a 9/16-inch box end torque adapter is required.

Key Features

• 9/16 inch box end head diameter for standard fastener engagement
• 12-point configuration reduces required swing arc in confined areas
• 17/64 inch head thickness for low-clearance fitment
• Chrome-plated steel construction for corrosion resistance and durability
• 0-degree head offset for direct inline torque application
• Tether capable design supports tool control programs in regulated work sites
• Meets AS954E S3.8.1 torque adapter standard

Compatibility

Designed for use with 9/16 inch fasteners in applications requiring a box end torque adapter. Compatible with tether systems for tool accountability. Non-magnetic and non-insulated construction is suitable for general mechanical service environments.

Installation Notes

This adapter is installed between a calibrated torque wrench and the target fastener — verify the torque wrench and adapter combination is properly rated for the fastener specification before use. Ensure the fastener and adapter are fully seated before applying torque to avoid slippage or fastener damage. Follow applicable ASME or facility torque procedures for the specific joint being serviced. Non-insulated construction means this tool is not rated for live electrical work.