S-92198A264 1 1/4"-7 x 6 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• High-strength performance with 80,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Reliable coarse threading (1 1/4"-7 UNC) provides excellent grip and faster installation in various materials
• Precise Class 2A thread fit ensures consistent engagement and reduces the risk of cross-threading
• Robust external hex drive and large head (1 7/8" width) allow for high torque application with standard tools
• Optimal load distribution with partial threading design, minimizing stress concentration points
• Full regulatory compliance including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This heavy-duty hex head screw is engineered to address critical challenges in structural assembly, machinery fabrication, and construction projects where vibration resistance and long-term reliability are paramount. The 18-8 stainless steel material provides excellent corrosion resistance, significantly extending service life in moist or chemically aggressive environments. The coarse UNC threading and Class 2A thread fit ensure secure fastening in both metal and wood applications, while the substantial 6 1/2" length and partial threading design optimize clamping force distribution. The external hex drive configuration accommodates high-torque installation, making it particularly valuable for maintenance operations and heavy equipment assembly where disassembly and reassembly are frequent requirements.

Specification Summary & Compliance

This hex head screw features 1 1/4"-7 UNC coarse threading with Class 2A thread fit per ASME standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing strictly adheres to ASME B18.2.1 specifications for dimensional consistency and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for use across various regulated industries and international markets.