S-90825A352 4-40 x 7/8" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with a built-in fluoroelastomer O-ring, effectively preventing leaks in high-pressure environments up to 6000 psi.
• Excellent corrosion resistance due to 18-8 Stainless Steel construction and a passivated finish, ensuring long-term durability in harsh conditions.
• Wide temperature tolerance from -20° to 400° F, making it suitable for applications with significant thermal fluctuations.
• High tensile strength of 70,000 psi provides reliable fastening under heavy mechanical loads, reducing the risk of failure.
• Precision Class 2A thread fit ensures easy installation and secure engagement, minimizing cross-threading and assembly errors.
• Fully threaded design offers consistent holding power along the entire 7/8" length for uniform clamping force.
• Compliance with RoHS 3 and REACH standards guarantees environmental safety and regulatory acceptance for global supply chains.

Professional Applications & Engineering Value

This 4-40 UNC rounded head Phillips screw is engineered to address critical sealing and corrosion challenges in demanding industrial environments. The combination of 18-8 Stainless Steel and a passivated finish provides exceptional resistance to rust and chemical exposure, extending service life in applications like fluid handling systems, automotive assemblies, and outdoor equipment. The integrated fluoroelastomer O-ring creates a reliable seal against high-pressure fluids and gases, preventing leaks that can lead to system failures. With a coarse UNC thread and Class 2A fit, it ensures quick, precise installation, reducing assembly time and improving productivity. Ideal for high-pressure sealing tasks, this screw delivers consistent performance where reliability is non-negotiable.

Specification Summary & Compliance

This screw features a 4-40 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy and easy assembly. It is fully threaded and measures 7/8" in length, with a pan-style rounded head and Phillips No. 1 drive. Manufactured from 18-8 Stainless Steel with a passivated finish, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.