S-90283A851 5/16"-18 x 2" ASME B18.6.3 Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for reliable performance in demanding industrial environments
• Superior holding power with 60,000 psi tensile strength and Rockwell B60 hardness for heavy-duty fastening applications
• Quick installation and removal through standard slotted drive design compatible with common hand tools
• Optimized thread engagement with fully threaded UNC coarse pattern ensuring secure connections in various materials
• Precise fit and interchangeability maintained through Class 2A thread tolerance meeting ASME B18.6.3 specifications
• Broad regulatory compliance with RoHS 3 and REACH environmental standards for global manufacturing applications
• Versatile pan head design providing excellent bearing surface while maintaining low-profile installation

Professional Applications & Engineering Value

This zinc-plated steel slotted pan head screw delivers exceptional engineering value across multiple industrial sectors. The combination of UNC coarse threading and Class 2A thread fit ensures rapid assembly while maintaining vibration resistance in machinery, equipment manufacturing, and structural applications. The fully threaded design provides consistent clamping force along the entire 2" length, eliminating weak points in critical joints. The zinc plating offers sacrificial protection against corrosion, extending service life in environments where moisture or chemicals are present. With its rounded pan head profile and standard slotted drive, this fastener enables both aesthetic integration and straightforward maintenance access, making it ideal for OEM production lines, maintenance operations, and industrial assembly where reliability and compliance with ASME B18.6.3 standards are paramount.

Specification Summary & Compliance

This industrial-grade fastener maintains Class 2A thread tolerance for consistent fit and performance across applications. Manufactured to ASME B18.6.3 specifications with UNC coarse thread form (5/16"-18) and right-hand threading. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures suitability for global supply chains. The zinc-plated steel construction delivers reliable performance with 60,000 psi tensile strength and Rockwell B60 hardness ratings.