S-92845A747 5/16"-18 x 5/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Maximum holding power with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications
• Superior corrosion resistance provided by 18-8 Stainless Steel material, ensuring long-term reliability in harsh environments
• Enhanced grip and component security from the extended tip design, preventing slippage and loosening
• High-strength durability with Rockwell B80 hardness, maintaining structural integrity under heavy loads
• Easy and secure installation using the 5/32" hex drive, allowing for high torque application without stripping
• Reliable coarse UNC threading for quick assembly and strong engagement in a wide range of materials
• Broad industrial compatibility by meeting ASME B18.3 standards and global environmental regulations

Professional Applications & Engineering Value

This 5/16"-18 UNC Class 3A set screw is engineered to solve critical challenges in industrial assembly and machinery. The 18-8 Stainless Steel construction provides excellent resistance to rust and chemical exposure, making it ideal for outdoor equipment, marine applications, and food processing machinery. The extended tip ensures a deeper bite into shafts and collars, effectively resisting rotational forces and vibration-induced loosening in high-stress environments like motor mounts and gear assemblies. Its coarse UNC thread and Class 3A fit deliver precise, reliable engagement, reducing the risk of cross-threading and ensuring consistent clamping force. The hex headless design with a 5/32" drive facilitates flush mounting and access in confined spaces, while the material's hardness maintains performance in repetitive adjustment scenarios.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability. The UNC coarse thread with Class 3A fit provides tight tolerances for superior thread engagement. Tip dimensions include a diameter of 0.203" (-0.008" to 0 tolerance) and length of 0.082" (-0.005" to 0 tolerance) for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global supply chains.