S-92186A386 1/2"-20 x 2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
• Fine UNF thread design provides better engagement and clamping force in precision assemblies
• External hex drive with 3/4" head width allows for high-torque installation using standard tools
• Class 2A thread fit guarantees consistent, trouble-free assembly and interchangeability
• Partial threading offers optimal grip length while reducing weight and material usage
• Full compliance with industry standards including ASME B18.2.1, RoHS 3, and REACH for global acceptance

Professional Applications & Engineering Value

This 1/2"-20 UNF hex head screw in 316 Stainless Steel delivers exceptional durability where corrosion resistance and mechanical strength are critical. The fine thread spacing ensures superior vibration resistance in dynamic equipment, while the external hex drive facilitates quick installation in confined spaces. With a Rockwell B70 hardness and 70,000 psi tensile strength, it withstands extreme operational stresses in marine, chemical processing, and structural applications. The partially threaded design concentrates clamping force precisely where needed, making it ideal for machinery, pumps, and heavy-duty assemblies requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 specifications with Class 2A thread fit for consistent dimensional accuracy. Features a 1/2"-20 UNF fine thread, 2" length, and partial threading starting from 1 1/4" minimum thread length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial use.