S-91783A581 5/16"-18 x 3/4" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish for long-term reliability in harsh environments
• High tensile strength of 100,000 PSI ensures reliable performance under heavy loads and vibration
• Class 2A thread fit provides optimal assembly clearance while maintaining secure fastening integrity
• Coarse UNC threading enables faster installation and reduced cross-threading risks in industrial applications
• Fully threaded design offers maximum grip length and consistent holding power along the entire fastener
• Standard rounded head profile with slotted drive provides reliable installation with common tools
• Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH ensures regulatory adherence for global projects

Professional Applications & Engineering Value

These 5/16"-18 UNC slotted rounded head screws deliver critical performance advantages for demanding industrial applications. The 18-8 stainless steel composition combined with passivated finish creates a robust barrier against corrosion, making them ideal for manufacturing equipment, marine components, and food processing machinery where moisture resistance is essential. The coarse thread configuration and Class 2A fit significantly reduce installation time while preventing thread damage during high-volume assembly operations. With 100,000 PSI tensile strength and Rockwell B100 hardness, these fully threaded screws maintain structural integrity in high-stress environments, providing engineers with a reliable fastening solution that meets rigorous ASME B18.6.3 standards for dimensional consistency and performance reliability.

Specification Summary & Compliance

This 5/16"-18 UNC slotted rounded head screw features precise Class 2A thread fit tolerances and coarse thread spacing per Unified National Coarse standards. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product fully meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility in industrial supply chains.