S-93190A282 1/4"-20 x 3 3/4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments thanks to 316 stainless steel construction
• High-strength performance with 70,000 psi tensile strength for reliable, heavy-duty fastening
• Superior durability and wear resistance ensured by Rockwell B70 hardness
• Optimized for quick assembly with a coarse UNC thread and external hex drive for easy wrench access
• Precise thread engagement and consistent fit provided by Class 2A thread fit tolerance
• Versatile partial threading allows for both secure clamping and unthreaded shank benefits
• Guaranteed compliance and safety with ASME B18.2.1 standards and RoHS 3 & REACH environmental regulations

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 1/4"-20 UNC hex head screw in 316 Stainless Steel provides a robust solution where corrosion and high stress are primary concerns. The coarse thread design ensures rapid installation and superior holding power in softer materials or where vibration resistance is critical. Its partially threaded shank offers concentrated clamping force while the unthreaded portion increases shear strength. The external hex drive and substantial head width allow for high torque application, making it ideal for machinery, marine hardware, chemical processing equipment, and structural assemblies that require a heavy-duty fastener capable of withstanding aggressive environments without compromising mechanical integrity.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 2A thread fit for consistent dimensional accuracy and interchangeability. It is manufactured to meet the dimensional requirements of ASME B18.2.1 and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for use in various markets.