S-92198A641 3/8"-16 x 4 1/4" 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 environments and long-term outdoor use.
• High tensile strength of 80,000 psi ensures reliable performance under significant mechanical stress and vibration.
• Class 2A thread fit provides consistent, easy assembly while maintaining secure fastening in industrial applications.
• External hex drive and hex head design allows for high-torque installation with common tools, speeding up assembly processes.
• Partial threading offers optimal grip and clamping force for materials of varying thicknesses.
• Coarse UNC thread enables quick engagement and reduced cross-threading risk in demanding conditions.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees adherence to strict quality, safety, and environmental standards.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw is engineered from 18-8 stainless steel to address common industrial challenges such as corrosion, high stress, and assembly efficiency. The external hex drive and coarse thread design facilitate rapid installation in machinery, structural frameworks, and heavy equipment, minimizing downtime. Its 80,000 psi tensile strength and Rockwell B70 hardness ensure durability in high-vibration environments, while the partial threading provides precise clamping without compromising joint integrity. Ideal for construction, manufacturing, and marine applications, this fastener delivers long-term reliability and reduced maintenance costs.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with Class 2A fit for consistent dimensional accuracy. It meets ASME B18.2.1 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.