S-93190A385 1/2"-20 x 1 3/4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 316 stainless steel construction, ideal for harsh chemical and marine environments
• High mechanical reliability with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Precise thread engagement with Class 2A fit and UNF fine threading, ensuring secure fastening and vibration resistance
• Full-threaded design provides maximum grip length and load distribution across the entire fastener
• Standard-compliant performance meeting ASME B18.2.1 specifications for consistent quality and interchangeability
• Easy installation and removal with external hex drive and 3/4" head width for standard tool compatibility
• Environmentally compliant with RoHS 3 and REACH regulations, safe for restricted substance applications

Professional Applications & Engineering Value

This 316 stainless steel hex head screw delivers critical performance in corrosive and high-stress environments where failure is not an option. The UNF fine threading and Class 2A thread fit provide superior vibration resistance compared to coarse threads, making it ideal for machinery, processing equipment, and structural applications subject to dynamic loads. The external hex drive allows for high torque application with standard tools, while the fully threaded design ensures maximum clamping force distribution. With exceptional chemical resistance surpassing standard stainless grades, this fastener is engineered for chemical processing, marine, and food industry applications where both mechanical strength and environmental durability are paramount.

Specification Summary & Compliance

This 1/2"-20 UNF hex head screw features precise Class 2A thread fit tolerances and complies with ASME B18.2.1 manufacturing standards. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental safety and regulatory acceptance. With dimensions of 1-3/4" length, 3/4" head width, and right-hand threading, this fully threaded screw delivers consistent performance across industrial applications requiring fine thread precision and corrosion-resistant properties.