S-92186A248 1 1/4"-7 x 4 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction
• Exceptional mechanical strength with a 70,000 psi tensile strength for demanding applications
• Reliable coarse threading (UNC) provides excellent grip and faster installation in various materials
• Secure external hex drive allows for high-torque tightening with standard tools
• Optimized partial threading ensures a strong clamp on materials without unnecessary thread length
• Precision thread fit (Class 2A) guarantees consistent performance and ease of assembly
• Comprehensive compliance with major industry standards and environmental regulations for assured quality

Professional Applications & Engineering Value

This heavy-duty hex head screw is engineered to solve critical challenges in industrial settings where corrosion resistance and structural integrity are paramount. Made from 316 stainless steel, it withstands aggressive chemicals and saline atmospheres, making it ideal for marine, chemical processing, and food industry applications. The UNC coarse thread and external hex drive design enable rapid, high-clamp-force assembly, reducing installation time while preventing stripping. Its partial threading concentrates stress effectively, providing a secure joint in structural frameworks, heavy machinery, and infrastructure projects where vibration resistance and long-term durability are essential.

Specification Summary & Compliance

This fastener adheres to Class 2A thread fit for consistent dimensional accuracy under the ASME B18.2.1 standard. It features a 1 1/4"-7 UNC coarse thread with a minimum thread length of 2 3/4" and a total length of 4 1/2". The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.