Midland Industries 39757 7-way Single Grip Plug Spring Guard

Product Description

The MIDLAND INDUSTRIES 39757 is a 7-way single grip plug with spring guard, designed for use in air brake system wiring on commercial vehicles and trailers. The plug features a nickel-plated, zinc body that resists corrosion in the harsh, moisture-exposed environments common to trucking and fleet applications. The spring guard protects the cable entry point from flex fatigue and mechanical damage. At 0.64 pounds and measuring 8.35 inches in length, this plug is built for durable, repeated connection cycles at the tractor-trailer interface. Installation is straightforward for fleet technicians and trailer mechanics working on air brake electrical connections.

This plug is suited for commercial truck and trailer air brake wiring applications where a 7-way connector is required. It is commonly installed at the rear of a tractor or the front of a trailer to carry electrical signals for brake lights, turn signals, and auxiliary circuits. The single grip design simplifies cable retention during assembly. This fitting falls within the air brake accessories category and is appropriate for fleet maintenance shops, trailer repair facilities, and OEM assembly lines.

Key Features

• 7-way connector configuration for full air brake electrical circuit coverage
• Nickel-plated zinc body provides corrosion resistance in outdoor and road-spray environments
• Spring guard at cable entry reduces flex fatigue and extends cable service life
• Single grip design for straightforward cable retention during installation
• Compact form factor at 8.35 inches length and 2.3 inches width for standard trailer coupling areas

Compatibility

Designed as an OEM-style replacement or service part for commercial truck and trailer air brake electrical systems requiring a standard 7-way plug connection.

Installation Notes

Installation should be performed by a qualified fleet technician or trailer mechanic familiar with air brake electrical systems. Disconnect and de-energize the trailer's electrical circuit before removing or installing the plug. Ensure the cable is properly seated and retained by the single grip before making the final connection. Inspect the spring guard and cable jacket for wear or damage during any service interval.