S-93190A228 5/8"-18 x 2 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction
• High-strength performance with 70,000 psi tensile strength for demanding applications
• Precise, secure fastening ensured by the UNF fine thread with Class 2A fit
• Excellent durability and wear resistance from the Rockwell B70 hardness rating
• Maximum grip and load distribution due to the fully threaded design
• Easy installation and removal with the standard external hex drive and 15/16" head width
• Guaranteed reliability and interchangeability through compliance with ASME B18.2.1 standards

Professional Applications & Engineering Value

This 5/8"-18 UNF hex head screw in 316 stainless steel is engineered to solve critical challenges in corrosive and high-stress industrial environments. The UNF fine threading provides a tighter seal and superior vibration resistance compared to coarse threads, making it ideal for precision equipment, marine hardware, and chemical processing applications. The fully threaded design ensures consistent clamping force along the entire 2-1/2" length, while the external hex drive and robust head dimensions allow for high-torque installation with common tools. This combination of corrosion-resistant material and high tensile strength directly addresses failure points in machinery, structural assemblies, and outdoor installations, delivering long-term reliability and reduced maintenance costs.

Specification Summary & Compliance

This screw features a Class 2A thread fit for standard clearance and ease of assembly, manufactured to ASME B18.2.1 dimensional specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use worldwide.