S-90002A125 1/2"-13 x 2" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 150,000 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
• Maximum torque transmission enabled by the external hex drive design and 3/4" head width for easy installation
• Enhanced durability from Rockwell C33 hardness and Grade 8 classification prevents deformation under heavy loads
• Full-threaded design allows for complete engagement along the entire 2" length, providing uniform clamping force
• Industry-standard compliance with ASME B18.2.1 and SAE J429 specifications ensures consistent quality and interchangeability

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver exceptional engineering value in demanding industrial environments where fastener failure is not an option. The combination of high-strength steel construction and zinc yellow-chromate plating addresses critical challenges in heavy machinery, structural steel connections, and equipment assembly by providing both corrosion resistance and reliable clamping force. The UNC coarse thread pattern with Class 2A fit ensures rapid installation and secure fastening in applications subject to vibration and dynamic loading. These fully threaded screws maintain consistent performance across the entire engagement length, making them ideal for construction, manufacturing, and automotive applications where high tensile strength and durability are paramount requirements.

Specification Summary & Compliance

This 1/2"-13 UNC hex head screw features precise Class 2A thread fit tolerances and complies with ASME B18.2.1 and SAE J429 Grade 8 specifications. The manufacturing process ensures dimensional accuracy with coarse thread spacing and fully threaded design along the 2" length. The product meets industry standards for high-strength fasteners with verified 150,000 PSI tensile strength and Rockwell C33 hardness ratings, providing assurance of performance in critical applications.