S-92240A435 1/2"-20 x 1 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 and outdoor applications
• Exceptional mechanical strength delivering 80,000 psi tensile strength for reliable, high-load fastening in demanding assemblies
• Precision fine threading with UNF Class 2A fit ensures smooth installation and secure, vibration-resistant connections
• Optimal torque transmission through the 3/4" external hex head design, preventing tool slippage during high-torque applications
• Full threading along 1½" length provides maximum grip and uniform stress distribution across the entire fastener
• Consistent hardness performance with Rockwell B70 rating maintains structural integrity under repeated stress cycles
• Regulatory compliance assurance meeting ASME B18.2.1, RoHS 3, and REACH standards for global quality and safety requirements

Professional Applications & Engineering Value

These 18-8 stainless steel hex head screws deliver critical performance advantages in industrial settings where corrosion resistance and structural reliability are paramount. The combination of UNF fine threading with Class 2A thread fit provides superior engagement in precision-machined components, reducing the risk of cross-threading while maintaining consistent clamping force. The external hex drive system accommodates high-torque applications common in machinery assembly, construction equipment, and marine hardware. With 80,000 psi tensile strength and complete threading, these fasteners distribute mechanical stress evenly, preventing joint failure in vibrating environments. Their corrosion-resistant properties make them ideal for chemical processing, food equipment, and outdoor structures where moisture and corrosive agents are present.

Specification Summary & Compliance

This 1/2"-20 UNF hex head screw features precision Class 2A thread fit with fine thread spacing, manufactured to exact dimensional standards. The fastener complies with ASME B18.2.1 specifications for hex head cap screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. With a standardized right-hand thread direction and fully threaded 1½" length, it ensures compatibility with industry-standard installation tools and procedures.