S-92579A104 1/4"-20 x 1/2" ASTM A193, ASTM A574 High-Temperature Alloy Steel Socket Head Screws—Grade B7

Key Features & Benefits at a Glance

• Exceptional high-temperature performance with a maximum rating of 1100°F, ideal for demanding thermal environments
• Superior tensile strength of 125,000 PSI ensures reliable load-bearing capacity in heavy-duty applications
• Precision Class 2A thread fit guarantees smooth assembly and consistent clamping force
• Corrosion-resistant alloy steel construction with Rockwell C26 hardness for enhanced durability
• Standard hex socket drive (3/16") allows for secure tool engagement in confined spaces
• Fully threaded UNC coarse design provides excellent grip and vibration resistance
• Compliance with ASTM A193 and environmental standards ensures material integrity and regulatory safety

Professional Applications & Engineering Value

This ASTM Grade B7 alloy steel socket head cap screw is engineered to address critical challenges in industrial settings where high tensile strength and thermal stability are paramount. Its 1/4-20 UNC coarse thread and Class 2A fit deliver reliable fastening in machinery, pressure vessels, and structural assemblies exposed to extreme temperatures up to 1100°F. The socket head design with a 3/16" hex drive facilitates installation in tight spaces, reducing assembly time while maintaining Rockwell C26 hardness to resist wear and deformation under heavy loads. Ideal for OEM and MRO applications, this fastener ensures long-term performance in corrosive or high-stress environments, supporting operational efficiency and safety compliance.

Specification Summary & Compliance

This socket head cap screw adheres to Class 2A thread fit per UNC standards, with precise dimensions including a 1/2" length and 3/8" head diameter. Manufactured in compliance with ASTM A193 specifications (referencing ASTM A574), it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, ensuring environmental safety and material reliability for industrial use.