S-92865A263 3/4"-10 x 4 1/4" 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 demanding applications, reducing the risk of fastener failure.
• Grade 5 steel construction with Rockwell C25 hardness provides superior durability and resistance to wear in industrial environments.
• Zinc plating finish offers enhanced corrosion resistance, extending the screw's service life in harsh conditions.
• UNC coarse threading with Class 2A fit allows for quick assembly and secure fastening in coarse-grained materials.
• Partially threaded design provides optimal grip and clamping force where full threading isn't required, improving joint stability.
• External hex drive enables easy installation and removal with standard tools, reducing labor time and effort.
• Compliance with ASME B18.2.1 and SAE J429 standards ensures consistent quality and interchangeability in mechanical assemblies.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as construction machinery, structural frameworks, and equipment assembly. The steel material combined with zinc plating provides excellent resistance to environmental factors, preventing rust and maintaining integrity in outdoor or high-moisture settings. The UNC coarse thread and Class 2A fit ensure rapid installation and reliable hold in coarse-textured substrates, minimizing the risk of stripping. With a partially threaded shank, it offers precise clamping without unnecessary threading, reducing stress concentrations. Ideal for industrial screws and construction fasteners, this component delivers consistent performance where high tensile strength and durability are paramount, supporting efficient maintenance and long-term reliability in engineered systems.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threading per industry norms. It meets ASME B18.2.1 and SAE J429 specifications for mechanical properties and interchangeability. Additionally, it is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence for global industrial use.