S-93516A124 5/16"-18 x 1 3/4" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance for extended service life in marine and harsh industrial environments
• High tensile strength of 70,000 psi provides reliable load-bearing capacity for demanding applications
• Rockwell B70 hardness ensures excellent durability and resistance to deformation under stress
• Fully threaded UNC coarse pattern enables faster installation and superior holding power in various materials
• External hex drive design allows for high-torque installation with standard tools
• Marine-grade 651 Silicon Bronze construction offers exceptional resistance to saltwater corrosion and atmospheric exposure
• Class 2A thread fit ensures consistent, reliable engagement with mating components

Professional Applications & Engineering Value

Engineered for marine applications and harsh industrial environments, these 651 Silicon Bronze hex head screws solve critical corrosion challenges where standard fasteners fail. The combination of marine-grade bronze material and UNC coarse threading provides exceptional resistance to saltwater degradation while ensuring quick, secure fastening in wood, metal, and composite materials. The external hex drive accommodates high-torque installation for structural connections, while the fully threaded design maximizes grip length and pull-out resistance. Ideal for boat building, dock construction, chemical processing equipment, and coastal infrastructure where corrosion resistance and 70,000 psi tensile strength are paramount for long-term reliability.

Specification Summary & Compliance

This 5/16"-18 UNC hex head screw features Class 2A thread fit for consistent engagement and meets ASME B18.2.1 dimensional standards. The fastener is fully threaded with coarse UNC pattern and measures 1 3/4" in length with 1/2" head width. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in industrial applications worldwide.