S-93802A638 8-32 x 3/4" MIL-DTL-18240, MS3212-28L, NASM3212, NASM82496 Sealing Thread-Locking Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance – Integrated silicone rubber O-ring and nylon patch thread locker create a dual-sealing system that withstands pressures up to 6000 psi, preventing leaks in demanding environments.
• Exceptional Corrosion Resistance – Made from 18-8 stainless steel with a passivated finish, offering reliable protection against rust and degradation in harsh industrial conditions.
• Vibration-Resistant Locking – The nylon patch thread locker maintains secure fastening from -40° to 225°F, reducing the risk of loosening under dynamic loads.
• Wide Temperature Compatibility – O-ring seal operates effectively from -80° to 400°F, ensuring consistent performance across extreme thermal cycles.
• High Tensile Strength – 70,000 psi tensile strength provides robust mechanical integrity for critical applications requiring dependable load-bearing capacity.
• Easy Installation & Removal – Phillips drive (No. 2) and rounded pan head design allow for straightforward tool engagement and efficient assembly in confined spaces.
• Precision Thread Fit – UNC coarse threads with Class 2A fit ensure smooth engagement and reliable fastening in standard tapped holes.

Professional Applications & Engineering Value

This 8-32 x 3/4" rounded head screw delivers exceptional engineering value by combining sealing and locking functions in a single 18-8 stainless steel fastener. The integrated silicone rubber O-ring and nylon patch thread locker address common industrial challenges such as fluid leakage and vibration-induced loosening in high-pressure systems. Ideal for hydraulic components, pneumatic equipment, and machinery enclosures, this screw maintains seal integrity under pressures up to 6000 psi while the passivated finish ensures long-term corrosion resistance. The Phillips drive and UNC coarse threads facilitate quick installation, reducing assembly time in manufacturing and maintenance operations where reliable, sealed fastening is critical.

Specification Summary & Compliance

This screw features Class 2A thread fit with UNC coarse threading (8-32 size) and complies with MIL-DTL-18240, MS3212-28L, NASM3212, and NASM82496 specifications. It is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use. The dimensional accuracy includes a head diameter of 0.347" and fully threaded 3/4" length, ensuring consistent performance in standard 0.177" maximum hole diameters.