S-93190A613 5/16"-18 x 8" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 316 stainless steel construction, ideal for harsh environments including marine and chemical processing applications
• Superior mechanical strength with 70,000 PSI tensile strength and Rockwell B70 hardness for reliable performance under heavy loads
• Easy installation and removal with external hex drive design providing secure tool engagement and high torque capability
• Optimal thread engagement through Class 2A thread fit and UNC coarse threading, ensuring consistent fastening in various materials
• Maximum grip length coverage with fully threaded 8-inch design for enhanced load distribution across the entire fastener length
• Regulatory compliance assurance meeting ASME B18.2.1 standards and environmental regulations including RoHS 3 and REACH
• Dimensional precision with standardized inch measurements ensuring interchangeability and reliable performance in industrial assemblies

Professional Applications & Engineering Value

This 316 stainless steel hex head screw delivers critical performance advantages in demanding industrial environments where corrosion resistance and structural integrity are paramount. The combination of 70,000 PSI tensile strength and Rockwell B70 hardness ensures reliable fastening in heavy machinery, structural frameworks, and marine equipment where vibration and dynamic loads are common. The UNC coarse thread design provides superior holding power in softer materials and faster installation in production environments. With full threading along the entire 8-inch length, this fastener distributes clamping forces evenly, preventing stress concentration points that can lead to joint failure. The external hex drive configuration allows for high-torque application using standard tools, making it ideal for maintenance and assembly operations across multiple industries including chemical processing, offshore platforms, and industrial manufacturing where corrosion resistant fasteners are essential for long-term reliability.

Specification Summary & Compliance

This heavy-duty hex head screw features precise Class 2A thread fit tolerances with 5/16"-18 UNC coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.2.1 specifications for dimensional accuracy and performance standards. The fastener is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, ensuring environmental responsibility and workplace safety. All measurements follow the inch system with standardized head dimensions (1/2" width, 13/64" height) and 8-inch length for consistent performance across industrial applications.