S-92620A962 1"-8 x 4" 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 demanding applications
• Superior corrosion resistance provided by zinc yellow-chromate plating in harsh environments
• Optimized thread engagement through Class 2A fit UNC coarse threads for reliable assembly
• Maximum thread contact with fully threaded design for enhanced grip and distribution
• High durability ensured by Rockwell C33 hardness and Grade 8 classification
• Easy installation and removal with external hex drive and standard 1½" head width
• Industry compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical performance in heavy-duty 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 and tensile forces in construction, machinery assembly, and structural frameworks. The zinc yellow-chromate plating offers superior corrosion protection in outdoor or chemically aggressive environments, while the 1"-8 UNC coarse threads with Class 2A fit ensure rapid installation and reliable clamping force. The fully threaded design maximizes engagement depth, making it ideal for applications requiring uniform stress distribution across the entire fastener length.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 2A thread fit tolerance for consistent performance. Features 1"-8 UNC coarse thread spacing with right-hand thread direction and external hex drive. Complies with ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties meet industrial standards for Grade 8 fasteners.