S-90276A583 5/16"-18 x 1" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Superior load-bearing capacity with 60,000 psi tensile strength and Rockwell B69 hardness for reliable performance under stress
• Quick installation and removal through standard slotted drive design compatible with common tools
• Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening in various materials
• Maximum holding power through fully threaded design distributing load evenly across the entire length
• Regulatory compliance assurance meeting ASME B18.6.3 specifications for consistent quality and performance
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

This zinc-plated steel rounded head slotted screw delivers exceptional engineering value in industrial fastening applications where corrosion resistance and high tensile strength are critical. The 5/16"-18 UNC coarse thread configuration provides excellent grip in soft materials and rapid installation in production environments, while the fully threaded design ensures consistent clamping force distribution. The rounded head profile offers a finished appearance with reduced snagging risks in machinery and equipment assembly. Particularly valuable in manufacturing, machinery maintenance, and structural applications, this fastener addresses common challenges of vibration resistance, environmental exposure, and repeated assembly/disassembly requirements while maintaining ASME B18.6.3 compliance for dimensional accuracy and performance reliability.

Specification Summary & Compliance

This 5/16"-18 x 1" screw features precise Class 2A thread fit tolerance per UNC standards, ensuring proper engagement and interchangeability. Manufactured to ASME B18.6.3 specifications for dimensional consistency and mechanical properties. The product demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. The inch system measurement, combined with 60,000 psi tensile strength and Rockwell B69 hardness, guarantees performance reliability across industrial applications requiring heavy-duty fasteners with right-hand threading and coarse thread spacing.