The GRACO 120552 is a center lock nut, typically made from steel or another durable metal, designed to secure components within GRACO spray equipment and proportioning systems. Its primary function is to provide a reliable, vibration-resistant fastening solution for critical assembly points.

Key Features:

• Center lock nut
• 1/2-20
• Compatible with GRACO spray equipment and proportioners where a 1/2-20 center lock nut is required
• Vibration-resistant locking mechanism
• Designed for secure fastening in high-vibration environments
• Ease of installation and removal with standard tools

Applications:
Used in GRACO spray equipment and proportioning systems for securing critical components such as piston rods, pump yokes, and other assembly points.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, performance, and safety within GRACO equipment, reducing the risk of equipment failure or downtime.
• Ensure the equipment is powered off and depressurized before installation or removal.
• Use appropriate tools to tighten the nut securely, but avoid over-tightening to prevent thread damage.
• Inspect the nut and mating surfaces for wear or damage before installation.
• Refer to the specific equipment manual for torque specifications and installation procedures.