S-92800A346 1 1/4"-7 x 6 1/4" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• High mechanical strength and durability with 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under heavy loads.
• Easy installation and removal with an external hex drive and 1 7/8" head width, providing a secure grip for standard tools.
• Optimized thread engagement through Class 2A thread fit and coarse UNC threading, ensuring consistent fastening and vibration resistance.
• Versatile partial threading design allows for precise clamping force control in a variety of assembly applications.
• Compliance with strict environmental standards, including RoHS 3 and REACH, ensuring safety and regulatory adherence for global supply chains.
• Robust 6 1/4" length and 1 1/4"-7 UNC thread size make it suitable for heavy-duty structural and machinery fastening needs.

Professional Applications & Engineering Value

This 1 1/4"-7 UNC Hex Head Screw is engineered to address critical challenges in demanding sectors such as construction, heavy machinery, and marine equipment. The use of 18-8 Stainless Steel provides excellent resistance to rust and chemical exposure, extending service life in corrosive settings. Its coarse UNC threads and Class 2A thread fit facilitate quick assembly while maintaining high clamping force, reducing the risk of loosening under vibration. The partially threaded shank concentrates strength where needed, preventing material damage and ensuring secure joints in structural frameworks, industrial conveyors, and large-scale fabrication projects. By integrating external hex drive compatibility, it supports efficient maintenance and disassembly, making it a reliable choice for engineers prioritizing longevity and performance.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent dimensional accuracy. Key specifications include a thread size of 1 1/4"-7, a length of 6 1/4", and a minimum thread length of 3". It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B70 and tensile strength of 80,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.