High-Strength Coated Hex Nut for Heavy-Duty Mechanical Fastening
Compatible Machines & Systems
- Graco Air-Operated Pump Assemblies – Structural fastening and component retention
- Industrial Spray Equipment – Secure mounting of mechanical and frame components
- Fluid Handling Systems – Fastening of brackets and threaded hardware
- Graco OEM Maintenance Kits – Replacement Grade 8 hardware component
What is the Graco FAA040540 Nut, Hex, 5/16-18, Cs, Gr8, U-Coat?
The Graco FAA040540 Nut, Hex, 5/16-18, Cs, Gr8, U-Coat is a heavy-duty carbon steel hex nut designed for secure fastening in Graco industrial spray and fluid handling equipment. It provides strong mechanical retention for critical assemblies exposed to vibration and operational stress.
Its Grade 8 strength rating and protective U-coat finish ensure durability, corrosion resistance, and reliable performance in demanding environments.
Key Features
- 5/16-18 carbon steel hex nut for standard fastening applications
- Grade 8 material for high-strength performance
- U-coat protective finish for enhanced corrosion resistance
- Designed for vibration-resistant mechanical assemblies
- OEM-compatible Graco replacement hardware
Frequently Asked Questions
Grade 8 indicates high-strength carbon steel suitable for heavy-duty industrial fastening applications.
The U-coat provides corrosion resistance and improved durability in harsh operating environments.
It is used in Graco pumps, spray systems, and structural mechanical assemblies requiring high-strength fastening.
Yes, its design and material strength help maintain secure fastening under vibration and load.
