S-93190A890 7/8"-9 x 5" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel construction, ideal for harsh chemical and marine environments
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B70 hardness provides superior wear resistance and durability for long service life
• Coarse UNC threads with Class 2A fit enable quick installation and secure fastening in industrial applications
• Full threading along 5" length offers maximum grip and adjustability across entire engagement area
• External hex drive design allows for high-torque installation using standard tools
• Comprehensive compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality and environmental safety

Professional Applications & Engineering Value

This heavy-duty hex head screw delivers critical performance advantages in demanding industrial settings where corrosion resistance and structural integrity are paramount. The 316 Stainless Steel composition provides superior protection against chemical exposure and saltwater environments, making it ideal for marine equipment, chemical processing plants, and offshore applications. The coarse UNC thread pattern combined with Class 2A thread fit ensures reliable engagement in materials where fine threads might strip or fail, while the external hex drive accommodates high installation torque without slippage. With full threading along the 5" length, this fastener offers maximum clamping force distribution, solving vibration-induced loosening problems common in heavy machinery, structural steel connections, and industrial equipment assembly.

Specification Summary & Compliance

This 7/8"-9 UNC hex head screw features precise Class 2A thread fit tolerances and coarse thread spacing per unified thread standards. Manufacturing strictly follows ASME B18.2.1 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) requirements for chemical safety, ensuring environmental responsibility while maintaining the high performance expected in industrial fastener applications.