S-96562A113 4-40 x 3/4" ASME B18.6.3 Thread-Locking Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Vibration-resistant performance with permanent nylon patch thread locker that maintains integrity from -70° to 250°F
• Superior corrosion resistance through 18-8 stainless steel construction and passivated finish for extended service life
• Reliable holding power with 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Quick installation and removal with Phillips No. 1 drive and right-hand coarse UNC threads
• Precise thread engagement through Class 2A thread fit ensuring consistent performance in assembly operations
• Optimized head design with rounded pan profile providing excellent bearing surface and clearance
• Full regulatory compliance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 4-40 UNC rounded head screws deliver exceptional engineering value in applications where vibration resistance and corrosion protection are critical. The 18-8 stainless steel construction combined with passivated finish provides superior protection against harsh environments, while the permanent nylon patch thread locker eliminates the need for additional locking components, simplifying assembly processes. The Phillips drive and coarse threading enable rapid installation in various materials, making these industrial screws ideal for machinery, electronic enclosures, and automotive components where reliable fastening is essential. The fully threaded design ensures maximum grip length, while the rounded pan head offers both aesthetic appeal and functional clearance in confined spaces.

Specification Summary & Compliance

This 3/4" length screw features precise Class 2A thread fit according to UNC standards, ensuring consistent performance in manufacturing environments. The manufacturing process strictly follows ASME B18.6.3 specifications for dimensional accuracy and quality control. Environmental compliance is verified through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, confirming the absence of restricted substances. The combination of 60,000 psi tensile strength and Rockwell B70 hardness guarantees mechanical reliability across the specified temperature range of -70° to 250°F.