S-92186A595 5/16"-18 x 3" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Reliable high-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Secure external hex drive allows for high torque application and easy installation with standard tools
• Optimized partial threading with 7/8" minimum thread length provides strong grip while reducing material usage
• Precision Class 2A thread fit ensures consistent assembly and interchangeability in UNC coarse thread applications
• Comprehensive regulatory compliance meets ASME B18.2.1, RoHS 3, and REACH standards for global industrial use
• Versatile 3" length design accommodates various material thicknesses in construction and machinery applications

Professional Applications & Engineering Value

These 316 stainless steel hex head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and mechanical strength are paramount. The UNC coarse thread configuration with Class 2A thread fit provides excellent engagement in softer materials and faster assembly compared to fine thread alternatives. The external hex drive design ensures maximum torque transmission without stripping, while the partial threading optimizes clamping force distribution. Ideal for marine equipment, chemical processing facilities, and food processing machinery, these fasteners maintain integrity in high-moisture, high-temperature, and corrosive environments where ordinary steel fasteners would rapidly deteriorate.

Specification Summary & Compliance

This 5/16"-18 UNC hex head screw features precision Class 2A thread tolerance with coarse thread spacing, manufactured to ASME B18.2.1 specifications for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. With a minimum thread length of 7/8" on a 3" overall length and manufactured from 316 stainless steel, these screws meet rigorous industrial standards for mechanical properties and environmental resistance.