S-92198A888 7/8"-9 x 4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• Class 2A thread fit offers consistent, reliable assembly with standard UNC coarse threading
• External hex drive design allows for easy installation and removal with common tools
• Partial threading provides optimal grip and clamping force for varied material thicknesses
• Compliance with ASME B18.2.1 ensures dimensional accuracy and interchangeability

Professional Applications & Engineering Value

This 7/8"-9 UNC hex head screw delivers exceptional engineering value in demanding applications where corrosion resistance and mechanical strength are critical. The 18-8 Stainless Steel composition provides inherent protection against rust and chemical exposure, making it suitable for marine, chemical processing, and outdoor infrastructure projects. The coarse UNC thread design ensures rapid assembly and superior holding power in softer materials or where vibration resistance is paramount. With 80,000 psi tensile strength and Rockwell B70 hardness, this fastener maintains structural integrity under sustained loads, while the 4" length and partial threading accommodate various material thicknesses in construction, heavy machinery, and industrial equipment assemblies.

Specification Summary & Compliance

This hex head screw features precision Class 2A thread fit with 7/8"-9 UNC coarse thread specifications, ensuring dimensional accuracy per ASME B18.2.1 manufacturing standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications worldwide.