S-98070A570 1/4"-20 x 5/8" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Under Extreme Pressure: Withstands up to 6000 psi, ensuring leak-proof performance in high-pressure industrial systems.
• Broad Temperature Resilience: Silicone O-ring maintains integrity from -80° to 400° F, ideal for applications with thermal fluctuations.
• Superior Corrosion Resistance: 18-8 stainless steel with passivated finish provides excellent durability in harsh, corrosive environments.
• Effortless Installation and Removal: Phillips No. 3 drive and undercut flat head design allow for quick, secure fastening without slippage.
• Precise Thread Engagement: UNC coarse threads with Class 2A fit ensure consistent, reliable connections in various materials.
• Full Thread Coverage for Maximum Grip: Fully threaded design enhances holding power and distributes stress evenly along the length.
• Compliance with Global Standards: Meets RoHS 3 and REACH regulations, supporting safe and sustainable industrial operations.

Professional Applications & Engineering Value

This 1/4"-20 x 5/8" stainless steel sealing screw is engineered to address critical sealing challenges in demanding industrial settings. The combination of 18-8 stainless steel material and a passivated finish offers robust resistance to corrosion, extending service life in environments exposed to moisture and chemicals. The integrated silicone O-ring provides a reliable seal that prevents fluid and gas leaks under pressures up to 6000 psi, making it ideal for hydraulic systems, pneumatic equipment, and high-pressure vessels. The UNC coarse threads and Class 2A thread fit ensure easy installation and secure fastening, reducing assembly time and minimizing the risk of thread stripping. With its flat head undercut profile and Phillips drive, this screw delivers consistent performance in applications where flush mounting and vibration resistance are essential, such as in machinery, automotive assemblies, and industrial enclosures.

Specification Summary & Compliance

This screw features precise UNC coarse threads with a Class 2A thread fit for reliable dimensional accuracy and ease of assembly. It is manufactured from 18-8 stainless steel with a passivated finish to enhance corrosion resistance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring it meets stringent environmental and safety regulations for industrial use.