S-91268A853 3/4"-10 x 2 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 wear resistance due to Rockwell C33 hardness, extending service life in demanding environments
• Secure fastening with coarse UNC threading that provides excellent grip and reduces cross-threading risks
• Optimized torque transmission through the external hex drive design for efficient installation
• Precise thread fit (Class 2A) ensuring consistent engagement and vibration resistance
• Environmental compliance meeting RoHS 3 and REACH standards for safe industrial use
• Partial threading design offering flexibility for applications requiring both threaded and unthreaded sections

Professional Applications & Engineering Value

This Grade 8 steel hex head screw delivers critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where high tensile strength and durability are paramount. The 3/4"-10 UNC coarse thread configuration ensures rapid installation and superior resistance to vibration loosening in high-load environments. Manufactured from hardened steel with Rockwell C33 hardness, it withstands extreme mechanical stresses while maintaining thread integrity. The external hex drive provides maximum torque application capability, making it ideal for construction, automotive, and manufacturing applications requiring reliable fastening performance under demanding conditions.

Specification Summary & Compliance

This fastener features Class 2A thread fit per UNC standards with 3/4"-10 coarse threading and 2 1/2" length. Manufactured to ASME B18.2.1 specifications and SAE J429 Grade 8 requirements, it ensures dimensional accuracy and mechanical performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components.