S-90283A849 5/16"-18 x 1 1/2" ASME B18.6.3 Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• High tensile strength of 60,000 psi ensures reliable performance under significant mechanical stress and vibration
• Rockwell B60 hardness provides excellent durability and resistance to deformation during installation and use
• Class 2A thread fit offers optimal assembly clearance while maintaining secure fastening integrity
• Fully threaded design delivers maximum grip length and uniform load distribution across the entire fastener
• Slotted pan head configuration enables easy installation with standard tools while providing a low-profile, rounded finish
• Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH ensures regulatory adherence for global industrial applications

Professional Applications & Engineering Value

This zinc-plated steel slotted pan head screw delivers exceptional engineering value across multiple industrial sectors. The UNC coarse thread configuration with Class 2A fit provides rapid installation in production environments while maintaining vibration resistance in machinery, equipment assembly, and structural applications. The combination of 60,000 psi tensile strength and Rockwell B60 hardness addresses critical failure points in heavy-duty applications where stress and mechanical wear are concerns. The zinc plating offers reliable corrosion protection for outdoor equipment, automotive components, and industrial machinery exposed to moisture or harsh conditions. The fully threaded 1-1/2" length ensures maximum engagement in thick materials, making it ideal for construction, manufacturing, and maintenance operations requiring robust fastening solutions.

Specification Summary & Compliance

This industrial fastener features precise 5/16"-18 UNC coarse threads with Class 2A thread fit per ASME standards, ensuring consistent dimensional accuracy and reliable performance. Manufacturing complies with ASME B18.6.3 specifications for dimensional integrity and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) compliance for chemical safety, making it suitable for regulated industries and international markets requiring stringent environmental and safety standards.