S-98201A316 1/4"-20 x 2 7/16" Exact-Grip-Length Flanged 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
• Enhanced load distribution and vibration resistance thanks to the integrated flange, eliminating the need for a separate washer
• High-strength performance with 80,000 psi tensile strength and Rockwell B83 hardness for demanding applications
• Secure, high-torque installation enabled by the 3/16" hex socket drive, preventing cam-out and ensuring a tight fit
• Reliable thread engagement with Class 3A fit UNC coarse threads, facilitating faster assembly and reducing cross-threading risks
• Versatile partial threading providing an unthreaded grip length for precise clamping in pivot and alignment applications
• Full regulatory compliance with RoHS 3 and REACH, ensuring safety and environmental standards are met for global supply chains

Professional Applications & Engineering Value

This flanged socket head cap screw is engineered to solve critical challenges in machinery assembly, automotive systems, and heavy-duty equipment. The 18-8 stainless steel material offers excellent resistance to oxidation and chemical exposure, making it suitable for outdoor or corrosive environments. The integrated flange distributes clamping force over a wider area, reducing surface pressure and preventing loosening under vibration, which is a common failure point in dynamic assemblies. Combined with the 1/4"-20 UNC coarse thread and Class 3A fit, this screw ensures rapid, precise installation with high repeatability, minimizing assembly time and improving production line efficiency. Its partially threaded design allows the unthreaded shank to act as a precise dowel, maintaining alignment in rotating components or structural joints.

Specification Summary & Compliance

This socket head cap screw adheres to UNC thread standards with a Class 3A thread fit for superior dimensional accuracy and interchangeability. Key specifications include a 1/4"-20 thread size, 3/16" hex drive, and a 2" grip length. The manufacturing and material composition are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring the absence of restricted hazardous substances for safe use in industrial and consumer products.