Parker 61AB-12 Compression Tube Nut Brass 400 Psi

Product Description

The PARKER 61AB-12 is a brass compression tube nut designed for use in hydraulic and pneumatic tubing assemblies where a secure, leak-resistant connection is required. Machined from brass, this nut mates with compression-style fittings to clamp tubing in place without the need for flaring or soldering. It carries a maximum working pressure of 400 psi and is rated for temperatures from -65 degrees F to 250 degrees F, making it suitable for a wide range of fluid and air line applications. Licensed plumbers, HVAC technicians, and fleet maintenance professionals are the typical installers.

This compression tube nut is used in residential and commercial plumbing, HVAC refrigerant line ancillary connections, and DOT-regulated brake and air line systems on commercial vehicles. Its compliance with D.O.T. FMVSS571.106 and SAE J246 standards makes it appropriate for brake tubing applications where regulated performance and material specifications are mandatory. The 0.76-inch inside diameter accommodates the corresponding tube size in a standard compression fitting assembly.

Key Features

• Brass construction resists corrosion in wet and fluid-contact environments
• Compression end connection — no flaring or soldering required
• Rated to 400 psi maximum working pressure
• Operating temperature range: -65 degrees F to 250 degrees F
• Meets D.O.T. FMVSS571.106 and SAE J246 standards for regulated applications
• 0.76-inch inside diameter for precise tube fitment

Compatibility

Designed as an OEM-style compression tube nut for use in standard compression fitting assemblies requiring D.O.T. FMVSS571.106 and SAE J246 compliant components.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or qualified fleet mechanic. Depressurize and isolate the fluid or air line completely before disassembly or fitting installation. Hand-tighten the nut onto the compression fitting body first, then use a properly sized open-end wrench to seat the ferrule — avoid over-tightening, which can deform the ferrule or tube. On DOT brake line applications, follow all applicable FMVSS and vehicle manufacturer service procedures.