S-92865A504 7/8"-14 x 2 3/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress industrial applications
• Superior corrosion resistance through zinc plating protects against environmental degradation in demanding conditions
• Precision Class 2A thread fit guarantees consistent engagement and vibration resistance in assembled components
• Grade 5 strength certification provides verified mechanical properties for critical fastening requirements
• Partially threaded design allows for optimal clamp force distribution while reducing installation time
• External hex drive configuration enables high-torque installation with standard tools for efficient assembly
• Fine UNF threading delivers enhanced resistance to loosening under dynamic loading conditions

Professional Applications & Engineering Value

This high-strength Grade 5 hex head screw addresses critical engineering challenges in heavy machinery, structural assemblies, and industrial equipment where vibration resistance and reliable clamping force are paramount. The zinc plated steel construction provides essential corrosion protection for applications exposed to moisture or harsh environments, while the 7/8"-14 UNF fine threading maintains secure fastening under dynamic loads. The partially threaded design concentrates clamping force precisely where needed, preventing joint relaxation in critical connections. With Rockwell C25 hardness and verified 120,000 psi tensile strength, this fastener delivers consistent performance in demanding applications from construction equipment to manufacturing machinery, ensuring long-term reliability and reduced maintenance requirements.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2A thread fit tolerance and UNF fine thread specifications for precision engagement. Complies with ASME B18.2.1 dimensional requirements and SAE J429 Grade 5 mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards for hazardous substance restrictions. The inch system measurement ensures compatibility with North American industrial specifications and replacement part requirements.