S-92620A730 1/2"-13 x 5 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh environments
• Precision thread engagement with Class 2A UNC coarse threads ensuring consistent fastening and vibration resistance
• Maximum hardness durability at Rockwell C33 providing excellent wear resistance and reduced thread deformation
• Full-length threading offering versatile installation options and consistent clamping force along the entire shank
• Heavy-duty external hex drive enabling high-torque installation with standard tools for efficient assembly
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed quality and interchangeability

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical engineering solutions for industrial applications where failure is not an option. The combination of 150,000 psi tensile strength and Rockwell C33 hardness provides exceptional resistance to shear forces and fatigue, making them ideal for heavy machinery, structural steel connections, and high-vibration equipment. The zinc yellow-chromate plating creates a robust barrier against corrosion in outdoor or chemically aggressive environments, while the UNC coarse threads ensure rapid installation and superior holding power in both metal and composite materials. These fully threaded fasteners with external hex drive design offer maximum versatility for construction, manufacturing, and maintenance applications requiring reliable, high-strength bolting solutions.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2A thread fit tolerances ensuring precise engagement and consistent performance. These 1/2"-13 UNC coarse thread screws comply with ASME B18.2.1 and SAE J429 Grade 8 specifications, guaranteeing dimensional accuracy and mechanical properties. The 5 1/2" length provides ample engagement for demanding applications, while the zinc yellow-chromate finish meets industry standards for corrosion protection. All materials and processes comply with relevant industrial regulations for quality assurance and performance reliability.