The GRACO 551795 is a hex jam nut, a six-sided internally threaded fastener designed to lock other nuts in place and prevent loosening. While the specific material is not detailed for this part number, typical hex jam nuts are made from steel or stainless steel. This part is intended for use within GRACO equipment, such as automated flushing systems for manual spray guns and other proportioning systems, to secure components and maintain assembly integrity.

Key Features:

• Hex Jam Nut
• 551795 (thread size not explicitly stated for this part number; however, GRACO 551795 is sometimes listed as a hex head nut, but in other contexts, it is a jam nut—clarification may be needed for exact thread size)
• Designed for use with GRACO equipment, including automated flushing systems and proportioning systems
• Six-sided (hex) design for easy tightening with standard tools
• Thinner profile than standard hex nuts for locking applications
• Reliable locking mechanism to prevent loosening under vibration or load

Applications:
Used in GRACO automated flushing systems for manual spray guns and other proportioning equipment to secure components and prevent loosening.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, function, and safety within GRACO equipment, reducing the risk of equipment failure or leaks.
• Ensure threads are clean and undamaged before installation
• Tighten the jam nut against the work surface or another nut as required by the assembly
• Use appropriate tools to avoid over-tightening and thread damage
• Regularly inspect for signs of wear or loosening during maintenance checks