S-90201A640 3/4"-10 x 2" Extreme-Strength Grade 9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 180,000 PSI tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
• Optimized thread engagement through UNC coarse threading and Class 2A fit ensures secure fastening and vibration resistance
• Enhanced durability with Rockwell C38 hardness rating maintains structural integrity under repeated stress
• Full threading design allows for maximum grip length and uniform stress distribution across the entire fastener
• Industrial-grade construction meeting Grade 9 specifications for demanding mechanical and structural applications
• Regulatory compliance with RoHS 3 and REACH standards ensures environmental responsibility and material safety

Professional Applications & Engineering Value

This Grade 9 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where failure is not an option. The combination of 180,000 PSI tensile strength and Rockwell C38 hardness provides exceptional resistance to mechanical stress and deformation, making it ideal for structural steel connections, heavy machinery assembly, and high-vibration environments. The zinc yellow-chromate plating offers superior protection against corrosion in outdoor or chemically aggressive settings, while the 3/4"-10 UNC coarse thread with Class 2A fit ensures quick installation and reliable thread engagement even in imperfect conditions. The external hex drive and substantial 1 1/8" head width allow for high torque application without stripping, providing engineers with a dependable fastening solution for critical joints and structural connections.

Specification Summary & Compliance

This heavy-duty fastener features 3/4"-10 UNC coarse threads with Class 2A thread fit for precise dimensional accuracy and reliable performance. Manufactured to Grade 9 strength specifications with full threading along the 2" length, it ensures consistent load distribution. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety standards for industrial applications worldwide.