S-91783A594 5/16"-18 x 2 1/2" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for heavy-duty applications
• Reliable coarse threading with UNC 5/16"-18 thread pattern and Class 2A fit for secure fastening in various materials
• Optimized partial threading design providing superior clamping force where full threading isn't required
• Industry-standard compliance meeting ASME B18.6.3 specifications for dimensional accuracy and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe use in regulated industries
• Versatile rounded head design with slotted drive for easy installation and professional appearance

Professional Applications & Engineering Value

These rounded head slotted screws deliver exceptional engineering value in demanding industrial environments where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel composition, enhanced by passivated finish, provides superior protection against oxidation and chemical exposure, making them ideal for marine equipment, food processing machinery, and outdoor structural applications. The 5/16"-18 UNC coarse threading ensures rapid installation and secure fastening in softer materials or applications requiring frequent disassembly. With partial threading optimizing clamping force distribution, these screws prevent material damage while maintaining consistent tension in assembly operations. The combination of 100,000 psi tensile strength and standardized dimensions per ASME B18.6.3 guarantees reliable performance in mechanical assemblies, electrical enclosures, and industrial equipment where vibration resistance and long-term durability are critical requirements.

Specification Summary & Compliance

This rounded head slotted screw features precise Class 2A thread fit with UNC 5/16"-18 coarse threading and 2 1/2" length, manufactured to exacting ASME B18.6.3 dimensional standards. The product maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Mechanical properties include Rockwell B100 hardness and 100,000 psi tensile strength, with partial threading design optimized for controlled clamping applications.