S-92579A107 1/4"-20 x 1 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 withstanding up to 1100°F for reliable operation in demanding thermal environments
• Superior tensile strength rating of 125,000 psi ensures maximum load-bearing capacity and joint integrity
• Precision Class 2A thread fit provides smooth installation and consistent clamping force in industrial assemblies
• Rockwell C26 hardness delivers excellent wear resistance and durability against mechanical stress
• ASTM A193 specification compliance guarantees material quality and performance consistency for critical applications
• 3/16" hex drive design enables secure tool engagement and high torque application without slippage
• Full regulatory compliance with RoHS 3 and REACH standards ensures environmental responsibility and global market acceptance

Professional Applications & Engineering Value

These ASTM Grade B7 alloy steel socket head cap screws deliver critical performance advantages in high-stress industrial environments where temperature extremes and mechanical loads challenge conventional fasteners. The UNC coarse thread configuration with Class 2A fit ensures rapid installation and reliable engagement in heavy machinery, pressure vessels, and power generation equipment. The alloy steel construction combined with specialized heat treatment provides exceptional creep resistance at elevated temperatures up to 1100°F, preventing joint relaxation in thermal cycling applications. The socket head design with hex drive accommodates confined spaces while enabling high torque values for critical bolted connections. These fasteners solve engineering challenges in petrochemical, automotive, and aerospace applications where high temperature operation and 125,000 psi tensile strength are mandatory for safety and performance.

Specification Summary & Compliance

This 1/4"-20 x 1-1/2" socket head cap screw features precision UNC coarse threads with Class 2A thread fit tolerance for consistent engagement. Manufactured to ASTM A193 specification with ASTM Grade B7 material certification, ensuring mechanical properties including 125,000 psi tensile strength and Rockwell C26 hardness. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these fasteners suitable for global industrial applications requiring verified material traceability and restricted substance control.