S-92620A656 3/8"-24 x 1 1/4" 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 reliable performance in high-stress applications
• Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
• Precise thread engagement with UNF fine threading and Class 2A fit ensuring vibration resistance and secure fastening
• Maximum hardness durability with Rockwell C33 rating maintaining structural integrity under repeated stress
• Full-threaded design providing consistent clamping force along the entire 1¼" length for uniform load distribution
• Heavy-duty construction meeting Grade 8 specifications for demanding mechanical and structural applications
• Standard-compliant reliability adhering to ASME B18.2.1 and SAE J429 for consistent quality and interchangeability

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance advantages for industrial assembly and heavy equipment applications. The UNF fine threading provides superior resistance to vibrational loosening compared to coarse threads, making them ideal for machinery subjected to dynamic loads. The zinc yellow-chromate plating creates a robust barrier against corrosion in demanding environments while maintaining electrical conductivity for grounding applications. With fully threaded construction and external hex drive, these fasteners offer maximum engagement depth and high-torque installation capability. The combination of 150,000 PSI tensile strength and Rockwell C33 hardness ensures reliable performance in structural connections, automotive assemblies, and industrial machinery where failure is not an option.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit for consistent assembly performance. Complies with ASME B18.2.1 and SAE J429 Grade 8 specifications for mechanical properties and dimensional requirements. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards. Features 3/8"-24 UNF fine threads with right-hand direction and external hex drive for standard tool compatibility across industrial applications.