S-92196A218 4-40 x 2 1/4" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for high-load applications.
• Precise Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies.
• Secure hex drive (3/32") provides high torque transmission and reduces the risk of tool slippage.
• Versatile 2 1/4" length with partial threading allows for flexible clamping and easy adjustment in various setups.
• Compliance with ASME B18.3 standards guarantees dimensional accuracy and interchangeability.
• Environmental and safety compliance with RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 4-40 UNC Thread Socket Head Cap Screw is engineered from 18-8 Stainless Steel to address common industrial challenges such as corrosion, mechanical stress, and assembly precision. Its coarse thread spacing and Class 3A thread fit provide excellent holding power and resistance to loosening under vibration, making it ideal for machinery, automotive, and electronics applications. The hex drive design allows for efficient installation in confined spaces, while the partially threaded shank offers flexibility for precise clamping without compromising strength. By meeting ASME B18.3 specifications, it ensures reliable performance in high-stakes environments, reducing downtime and maintenance costs.

Specification Summary & Compliance

This screw features a 4-40 UNC thread with Class 3A dimensional accuracy and coarse thread spacing. It is manufactured in compliance with ASME B18.3 standards and is certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations.