S-94705A724 1/2"-13 x 1 1/4" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 125,000 PSI tensile strength for reliable performance in high-stress applications
• Superior hardness and durability thanks to Rockwell C35 rating, resisting wear and deformation under heavy use
• Secure and precise fastening ensured by Class 2A thread fit, minimizing the risk of loosening in vibration-prone environments
• Easy installation and removal with external hex drive and 7/8" head width, compatible with standard tools for efficient maintenance
• Optimal thread engagement through fully threaded 1/2"-13 UNC coarse design, providing strong holding power in various materials
• Rigorous quality assurance with ASTM A193 compliance, meeting industry standards for critical industrial applications
• Right-hand thread direction for intuitive installation, reducing assembly errors and improving workflow efficiency

Professional Applications & Engineering Value

This ASTM Grade B7 hex head screw is engineered to address critical challenges in demanding industrial environments where fastener failure is not an option. The steel construction combined with 125,000 PSI tensile strength and Rockwell C35 hardness ensures exceptional resistance to stress corrosion cracking and thermal relaxation, making it ideal for pressure vessels, valve assemblies, and structural applications. The 1/2"-13 UNC coarse threading provides superior grip in both metallic and non-metallic materials, while the fully threaded design maximizes engagement length for enhanced load distribution. These characteristics solve common engineering pain points including joint integrity maintenance under cyclic loading, thermal expansion compensation, and vibration-induced loosening in heavy machinery and industrial equipment.

Specification Summary & Compliance

This high-strength hex head screw features precise Class 2A thread fit according to UNC standards with 1/2"-13 coarse thread spacing and right-hand thread direction. Manufactured to meet ASTM A193 specifications for Grade B7 fasteners, it ensures dimensional accuracy and performance reliability. The fastener is supplied in the inch system with a length of 1 1/4", head height of 5/16", and head width of 7/8" for consistent compatibility with industrial applications requiring standardized components.