S-90201A674 3/4"-10 x 8" Extreme-Strength Grade 9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 180,000 PSI tensile strength and Rockwell C38 hardness for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating that extends service life in demanding industrial environments
• Optimized thread engagement through UNC coarse threading and Class 2A fit ensures secure fastening and vibration resistance
• Heavy-duty construction with Grade 9 strength classification delivers maximum durability for critical structural connections
• Enhanced installation efficiency with external hex drive and 1 1/8" head width for superior torque application and tool access
• Versatile partial threading allows for precise clamping force distribution across connected materials
• Regulatory compliance assurance with RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 9 hex head screw addresses critical challenges in structural assembly and machinery maintenance. The steel construction with zinc yellow-chromate plating provides essential protection against corrosion in harsh environments, while the 3/4"-10 UNC coarse thread configuration ensures rapid installation and superior resistance to vibration loosening. The external hex drive design combined with the substantial 1 1/8" head width delivers exceptional torque transmission capability, making it ideal for construction equipment, industrial machinery, and structural steel connections where reliability is paramount. The partial threading allows for precise load distribution, preventing material damage in high-clamp force applications.

Specification Summary & Compliance

This heavy-duty fastener features precision Class 2A thread fit with UNC coarse threading (3/4"-10) and right-hand thread direction. Manufacturing complies with Grade 9 strength requirements (180,000 PSI tensile strength, Rockwell C38 hardness) and maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 8" length with 2" minimum thread length and zinc yellow-chromate finish ensures consistent performance across industrial applications.