S-92198A977 1 1/2"-6 x 8" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• High-strength performance with 80,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable load-bearing capacity and durability.
• Secure and efficient installation with a large 2 1/4" external hex head, providing superior grip for high-torque applications.
• Optimized for quick assembly featuring a coarse UNC thread and Class 2A fit, which resists cross-threading and speeds up the fastening process.
• Versatile partial threading design on an 8" length, offering a strong, unthreaded shank for precise clamping in structural applications.
• Guaranteed reliability and interchangeability by conforming to the stringent ASME B18.2.1 standard for dimensional consistency.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental regulations.

Professional Applications & Engineering Value

This 1 1/2"-6 UNC hex head screw is engineered to solve critical challenges in heavy-duty assembly. The 18-8 Stainless Steel material provides excellent resistance to rust and oxidation, making it a prime choice for construction, marine, and chemical processing equipment where environmental factors degrade lesser fasteners. The coarse thread and Class 2A thread fit ensure rapid, reliable engagement even in applications with vibration or dynamic loads, reducing the risk of thread stripping. The external hex drive and substantial head size allow for high torque application with standard tools, securing large structural members, machinery bases, and heavy fabrications effectively. Its partial threading design provides a non-threaded bearing surface that increases shear strength, preventing joint failure in demanding industrial applications.

Specification Summary & Compliance

This screw maintains precise dimensional tolerances as a Class 2A thread fit and adheres to the UNC (Unified Coarse) thread standard. Manufacturing and quality are governed by the ASME B18.2.1 specification. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for use in regulated markets.