S-92620A662 3/8"-24 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 reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
• Precise thread engagement with Class 2A UNF fine threads ensuring secure fastening and vibration resistance
• Maximum hardness durability at Rockwell C33 for maintained integrity under repeated loading cycles
• Full-threaded design offering consistent grip strength along the entire 4" length for uniform load distribution
• Standard-compliant engineering meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability
• Optimized drive efficiency with external hex head design for easy installation and high torque application

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance in demanding industrial settings where failure is not an option. The combination of high-strength steel construction and UNF fine threading provides exceptional resistance to vibrational loosening in heavy machinery, construction equipment, and automotive assemblies. The zinc yellow-chromate plating creates a protective barrier against corrosive elements in outdoor or chemical-exposed environments, while the fully threaded 3/8"-24 configuration ensures maximum thread engagement for distributed stress loads. Engineered to withstand extreme mechanical stresses, these industrial fasteners prevent costly downtime and maintenance in critical applications where reliability is paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent mating with UNF nuts and threaded components. Complies with ASME B18.2.1 dimensional specifications and SAE J429 mechanical property requirements for Grade 8 fasteners. Features right-hand thread direction with fine thread spacing (24 TPI) on a 3/8" diameter shaft. The 4" length and external hex drive configuration provide standardized installation compatibility across industrial applications.