The GRACO 17390-04 is a Belleville spring washer designed to provide axial spring force in bolted assemblies. It is typically made from high-strength steel and is used to maintain tension, compensate for relaxation, vibration, or differential thermal expansion within GRACO equipment. The part is engineered for heavy-duty performance and reliability in demanding industrial environments.

Key Features:

• Belleville spring washer
• 17390-04, .505ID
• Designed for use in GRACO equipment requiring Belleville spring washers; specific equipment compatibility should be verified with GRACO documentation
• Conical shape for high load in small space
• Engineered for lasting, heavy-duty performance
• Helps maintain bolt tension and compensate for vibration or thermal expansion
• Can be used as a single unit or in a stack for different load requirements

Applications:
Used in bolted assemblies within GRACO equipment to maintain tension, prevent loosening due to vibration or thermal expansion, and ensure reliable operation in industrial and maintenance applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and longevity of equipment. Non-genuine parts may compromise safety and equipment function.
• Ensure the washer is oriented correctly (convex side typically faces the bolt head or nut)
• Inspect for damage or wear before installation
• Follow GRACO equipment manual for specific torque and installation procedures
• Use appropriate tools to avoid over-tightening or damaging the washer