S-92579A106 1/4"-20 x 1" ASTM A193, ASTM A574 High-Temperature Alloy Steel Socket Head Screws—Grade B7

Key Features & Benefits at a Glance

• Exceptional tensile strength of 125,000 psi ensures reliable performance in high-stress industrial applications and prevents fastener failure
• Superior high-temperature resistance up to 1100°F maintains structural integrity and mechanical properties in demanding thermal environments
• Premium ASTM Grade B7 alloy steel construction provides excellent durability, fatigue resistance, and long-term reliability for critical assemblies
• Precision Class 2A thread fit with UNC coarse threads enables easier assembly, better debris clearance, and consistent clamping force
• Standard hex socket drive with 3/16" drive size offers secure tool engagement, reduced cam-out risk, and access to confined spaces
• Full threading along the 1" length provides maximum adjustment flexibility and uniform load distribution across the entire fastener
• Comprehensive regulatory compliance with RoHS 3 and REACH ensures environmental safety and global market acceptance for your products

Professional Applications & Engineering Value

These Grade B7 alloy steel socket head cap screws deliver critical performance where standard fasteners fail. The ASTM A193-compliant material maintains its 125,000 psi tensile strength even at elevated temperatures up to 1100°F, making these UNC threaded fasteners ideal for pressure vessels, high-temperature piping systems, and heavy machinery subjected to thermal cycling. The coarse thread design with Class 2A fit provides excellent vibration resistance while facilitating quicker assembly in industrial maintenance and manufacturing applications. The hex socket drive configuration ensures reliable installation in space-constrained environments where wrench clearance is limited.

Specification Summary & Compliance

This 1/4"-20 UNC socket head cap screw features Class 2A thread fit tolerances with coarse threading and measures 1" in length with standard head profile. Manufactured to ASTM A193 specifications for high-temperature service and compliant with ASTM A574 for socket head cap screws. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no substances of very high concern above threshold limits. Material certification includes Rockwell C26 hardness verification and mechanical testing to ensure consistent performance.