S-92198A391 3/4"-16 x 2 3/4" 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 tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B70 hardness provides excellent wear resistance and durability for long service life
• External hex drive and 1 1/8" head width allow for easy installation with standard tools and high torque application
• UNF fine threading (3/4"-16) offers superior holding power and vibration resistance compared to coarse threads
• Partial threading design provides optimal grip length while reducing weight and material usage
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality assurance and environmental responsibility

Professional Applications & Engineering Value

This heavy-duty hex head screw delivers exceptional engineering value in demanding applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition provides inherent protection against rust and chemical exposure, making it ideal for marine equipment, food processing machinery, and outdoor structural assemblies. The UNF fine thread pattern (3/4"-16) creates more thread engagement points than coarse threads, significantly enhancing vibration resistance in dynamic load conditions. With 80,000 psi tensile strength and Rockwell B70 hardness, this fastener maintains clamping force under extreme pressure while resisting deformation. The external hex drive and substantial 1 1/8" head width facilitate secure tool engagement for precise torque application in confined spaces. These features combine to solve critical challenges in industrial maintenance, heavy equipment manufacturing, and infrastructure projects where fastener failure is not an option.

Specification Summary & Compliance

This 3/4"-16 UNF hex head screw features precise Class 2A thread fit tolerances ensuring consistent engagement and proper clearance. The partially threaded design provides 1 3/4" minimum thread length on a 2 3/4" overall length body. Manufacturing strictly adheres to ASME B18.2.1 dimensional standards for hex head cap screws. 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 global industrial applications requiring environmental responsibility.