Parker 61C-3 Compression Tube Nut 3/16 in Od Brass Sae J-512

Product Description

The PARKER 61C-3 is a brass compression tube nut designed for use in hydraulic and fluid system tubing connections. It accepts 3/16 inch outside diameter tubing with a 3/8-24 inch thread size and is manufactured to SAE J-512 standards. This fitting nut is used to complete a compression-style connection, creating a leak-resistant seal when paired with the appropriate sleeve and tube end. It handles working pressures up to 400 psi and operates across a wide temperature range from -65 degrees F to 250 degrees F. Plumbers, HVAC technicians, and fluid power mechanics install this type of fitting in refrigeration, pneumatic, and hydraulic tubing assemblies.

The PARKER 61C-3 is suited for residential and light commercial applications where small-diameter brass compression fittings are required. Typical install scenarios include refrigeration tubing runs, fuel line connections, and instrumentation plumbing where SAE J-512 compliance is specified. The compression design eliminates the need for flared ends or solder, making it appropriate for field repairs and new installations alike.

Key Features

• Brass construction provides corrosion resistance and durability in fluid system environments
• SAE J-512 compliant for standardized compression tube fitting applications
• Rated to 400 psi maximum working pressure
• Wide service temperature range: -65 degrees F to 250 degrees F
• Fits 3/16 inch outside diameter tubing with 3/8-24 thread
• No flaring or soldering required for installation

Compatibility

Designed as an OEM-style compression tube nut for use in SAE J-512 compliant compression fitting assemblies on 3/16 inch OD tubing.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or fluid power mechanics. Shut off all system pressure and drain lines before disassembly or fitting replacement. Hand-tighten the nut onto the mating fitting body before applying a final snug turn with a wrench to seat the compression sleeve without over-torquing the brass threads. Confirm the tubing is cut square and deburred before assembly to ensure a proper seal.