The GRACO 556650 is a brass tube nut fitting designed for connecting 5/16 inch (7.9 mm) tubing in lubrication and fluid transfer systems. It is intended for use with oil and grease in on-road vehicle applications, providing a secure and durable connection for pneumatic grease jockey mainline tubing.

Key Features:

• Nut Fitting
• 5/16 inch (7.9 mm) tube
• Brass
• Oil, grease; on-road vehicles; 5/16 inch (7.9 mm) tubing
• High durability and precision
• Easy to install
• Reliable connection for fluid transfer systems

Applications:
Primarily used in on-road vehicle lubrication systems for connecting mainline tubing in pneumatic grease jockey setups.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the lubrication system.
• Ensure tubing is cut cleanly and squarely before installation.
• Hand-tighten the nut to avoid over-torquing and potential damage to the fitting or tubing.
• Check for leaks after installation and tighten further if necessary.
• Regularly inspect fittings for signs of wear or leakage.
• Replace fittings if damage or excessive wear is detected.