Midland Industries 865304C Dot Female Bulkhead Connector

Product Description

The MIDLAND INDUSTRIES 865304C is a D.O.T.-rated composite female bulkhead connector designed for pneumatic tubing systems in commercial vehicle, fleet, and industrial applications. It provides a secure, leak-resistant transition between a 5/32-inch push-to-connect port and a 1/4-inch female NPT threaded port, allowing techs to mount tubing lines through a panel or bulkhead. The composite body resists corrosion and keeps weight low. Maximum operating pressure is 145 psi, and the part is rated for temperatures from -40 degrees F to 140 degrees F, covering a wide range of mobile and stationary service environments. Licensed technicians and fleet maintenance professionals handle routine installation.

This fitting is suited for air brake auxiliary lines, pneumatic control circuits, and other D.O.T.-compliant tubing runs where a through-panel connection is required. The push-to-connect end accepts 5/32-inch O.D. tubing for fast, tool-free insertion, while the 1/4-inch female NPT end threads onto standard pipe fittings or manifold ports. Typical install scenarios include trailer chassis plumbing, cab air system repairs, and light industrial pneumatic panel builds where D.O.T. compliance is required.

Key Features

• D.O.T.-rated construction for use in commercial vehicle and regulated pneumatic systems
• 5/32-inch push-to-connect end accepts tubing without additional tools for quick assembly
• 1/4-inch female NPT end threads directly onto standard pipe fittings or ports
• Composite body provides corrosion resistance and reduced weight compared to all-metal fittings
• Rated to 145 psi maximum operating pressure
• Wide temperature range of -40 degrees F to 140 degrees F suits both mobile and fixed installations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for D.O.T.-compliant pneumatic tubing systems using 5/32-inch O.D. push-to-connect tubing and 1/4-inch female NPT threaded ports.

Installation Notes

Installation is typically performed by fleet maintenance technicians or licensed pneumatic system mechanics. Depressurize and lock out the air system completely before removing or installing any fitting. The NPT threads should be sealed with an appropriate thread sealant or tape rated for pneumatic service. After installation, pressurize the system gradually and leak-test all connections before returning the equipment to service.