S-90825A622 4-40 x 3/4" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with a silicone rubber O-ring that withstands pressures up to 6000 psi, preventing leaks in demanding applications.
• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction and a passivated finish, ensuring long-term durability in harsh environments.
• Broad temperature compatibility from -80° to 400° F, making it suitable for extreme thermal conditions without compromising seal integrity.
• Reliable fastening and easy installation with a Phillips drive (No. 1 size) and fully threaded UNC coarse thread design for quick, secure assembly.
• Precise thread fit with Class 2A tolerance, ensuring consistent engagement and reducing the risk of cross-threading in industrial setups.
• Compliance with environmental standards, including RoHS 3 and REACH, for safe, sustainable use in regulated industries.
• Versatile rounded pan head design that provides a low-profile, secure fit while accommodating standard tools for efficient maintenance.

Professional Applications & Engineering Value

This 4-40 UNC rounded head Phillips screw is engineered to address critical sealing challenges in industrial applications where pressure and temperature fluctuations are common. The combination of 18-8 Stainless Steel and a passivated finish offers robust corrosion resistance, ideal for machinery, automotive, or HVAC systems exposed to moisture or chemicals. The silicone rubber O-ring ensures a tight seal, preventing fluid or gas leaks under pressures up to 6000 psi, while the coarse thread and Class 2A fit facilitate quick installation without sacrificing reliability. Its fully threaded design and pan head profile make it a go-to for assemblies requiring consistent clamping force and easy access in confined spaces, reducing downtime and maintenance costs.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Key specifications include a thread size of 4-40, length of 3/4", and maximum hole diameter of 0.127", supporting reliable performance in high-pressure environments.