S-90201A682 1"-8 x 3" 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 demanding environments
• Optimal hardness and durability with Rockwell C38 rating, resisting deformation under heavy loads
• Precise thread engagement through Class 2A thread fit, ensuring secure fastening and vibration resistance
• Easy installation and removal with external hex drive design and fully threaded coarse pitch (1"-8 UNC)
• Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable operations
• Versatile industrial application with 3" length and right-hand threading for diverse assembly requirements

Professional Applications & Engineering Value

These Grade 9 hex head screws deliver critical engineering solutions for heavy-duty industrial applications where failure is not an option. The combination of high-carbon steel construction and zinc yellow-chromate plating addresses common challenges of structural integrity and environmental degradation in machinery, construction, and manufacturing equipment. The 1"-8 UNC coarse thread configuration provides excellent grip in various materials while resisting loosening from vibration. With full threading along the 3" length, these external hex drive fasteners offer maximum adjustability and clamping force distribution, making them ideal for critical joints in structural frameworks, heavy equipment assembly, and industrial machinery where 180,000 psi tensile strength is essential for safety and reliability.

Specification Summary & Compliance

These hex head screws feature precise Class 2A thread fit according to UNC standards with 1"-8 coarse thread spacing and right-hand thread direction. Manufacturing complies with Grade 9 strength classification requirements, delivering 180,000 psi tensile strength and Rockwell C38 hardness. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current industry standards for hazardous substance restrictions and chemical safety.