S-92198A125 1/4"-28 x 6" 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 and outdoor applications.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration, reducing the risk of fastener failure.
• External hex drive and hex head design provides secure, high-torque installation and removal with standard tools, speeding up assembly.
• UNF fine thread (1/4"-28) with Class 2A fit offers precise, secure fastening with excellent resistance to loosening in dynamic applications.
• Partially threaded shank allows for unthreaded grip length, providing superior clamping force on materials without thread damage.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees consistent quality, safety, and environmental standards for global supply chains.
• Rockwell B70 hardness delivers excellent wear resistance and durability, extending the service life of your assemblies.

Professional Applications & Engineering Value

This 1/4"-28 UNF hex head screw is engineered to solve critical fastening challenges in demanding sectors like machinery, construction, and transportation. The 18-8 stainless steel material provides inherent resistance to rust and chemical exposure, making it suitable for outdoor or corrosive environments. The fine thread and Class 2A thread fit ensure tight, vibration-resistant connections, which are essential for equipment subject to constant motion or thermal cycling. With an external hex drive and partial threading, it allows for high clamp load distribution and easy installation in confined spaces, reducing assembly time and improving structural integrity. Ideal for securing heavy-duty frames, panels, and mechanical components where reliability and compliance with ASME B18.2.1 are non-negotiable.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and a UNF fine thread (1/4"-28) with a minimum thread length of 3/4". It is manufactured in compliance with ASME B18.2.1 for dimensional accuracy and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial and consumer applications.