S-91772A191 8-32 x 5/16" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh environments and long-term reliability
• High tensile strength of 70,000 psi ensures secure fastening under heavy loads, reducing failure risks in critical assemblies
• Rockwell B70 hardness provides excellent wear resistance and maintains thread integrity during repeated installations
• Fully threaded design offers maximum grip and uniform clamping force across the entire length for consistent performance
• Easy installation and removal with Phillips No. 2 drive, minimizing tool slippage and speeding up assembly processes
• Coarse UNC threads enable quick engagement and reduced cross-threading, enhancing productivity in high-volume applications
• Compliant with ASME B18.6.3, RoHS 3, and REACH standards, ensuring quality, safety, and environmental responsibility for global supply chains

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 8-32 UNC coarse thread pan head screws deliver exceptional performance in machinery, electronics, and automotive assemblies. The passivated 18-8 stainless steel provides a durable, corrosion-resistant surface that withstands exposure to moisture, chemicals, and temperature variations, preventing rust and extending service life. The fully threaded design ensures uniform stress distribution, reducing the risk of loosening under vibration—a common challenge in dynamic applications. With a rounded pan head and Phillips No. 2 drive, these screws offer a low-profile, secure fit that resists cam-out, making them ideal for tight spaces and high-torque scenarios. Their compliance with ASME B18.6.3 guarantees precise dimensional accuracy, while RoHS 3 and REACH adherence supports sustainable manufacturing practices, providing engineers with reliable, regulation-compliant fastening solutions.

Specification Summary & Compliance

This screw features a Class 2A thread fit per UNC coarse thread standards, ensuring consistent engagement and interchangeability. Dimensions include a 5/16" length, 0.322" head diameter, and 0.164" thread diameter, manufactured to exacting tolerances. It meets ASME B18.6.3 specifications for mechanical and dimensional requirements, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmental safety in industrial applications.