The GRACO 557374 is a threaded fill stud designed for use with GRACO LubriSystem® lubrication equipment. It is typically constructed from durable metal and serves as a connection point for lubricant delivery systems, ensuring secure and leak-resistant attachment to lubrication lines.

Key Features:

• Fill Stud
• Trabon Style, 1/4 inch NPT male
• Maximum working pressure: 500 PSI
• For use with GRACO LubriSystem®; compatible with mating coupler 558906 (506-322-000)
• Threaded connection for secure attachment
• Standard 1/4 inch NPT male thread
• Designed for reliability and ease of maintenance in lubrication systems

Applications:
Used in lubrication systems for secure connection and delivery of lubricants in industrial, mining, and agricultural equipment.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of lubrication systems.
• Ensure threads are clean and free of debris before installation
• Use appropriate thread sealant if required for leak prevention
• Tighten securely but avoid over-torquing to prevent thread damage
• Regularly inspect for leaks or wear and replace as needed