S-90825A950 1/4"-20 x 1/2" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance: Integrated silicone O-ring provides excellent pressure sealing up to 6000 psi, preventing leaks in demanding applications.
• Wide Temperature Tolerance: Operates effectively from -80° to 400°F, ensuring consistent performance in extreme thermal environments.
• Superior Corrosion Resistance: Made from 18-8 stainless steel with a passivated finish for enhanced durability against rust and chemical exposure.
• High Tensile Strength: Withstands up to 70,000 psi tensile load, offering robust fastening for high-stress assemblies.
• Easy Installation: Phillips No. 3 drive and Class 2A thread fit ensure quick, secure tightening with standard tools.
• Broad Industrial Compliance: Meets RoHS 3 and REACH standards, supporting use in regulated and environmentally conscious industries.
• Versatile Coarse Thread Design: 1/4"-20 UNC coarse threads provide strong holding power and resistance to vibration loosening.

Professional Applications & Engineering Value

Engineered for high-pressure sealing applications, this rounded head Phillips screw integrates a silicone O-ring to solve common leakage issues in industrial equipment, hydraulic systems, and automotive assemblies. The 18-8 stainless steel construction, combined with a passivated finish, ensures long-term corrosion resistance, reducing maintenance costs in harsh environments. Its fully threaded UNC design and Class 2A thread fit deliver precise engagement and uniform clamping force, critical for maintaining seal integrity under dynamic loads. Ideal for use in pumps, valves, and machinery where pressure resistance up to 6000 psi and a wide temperature range are essential, this screw provides a dependable, compliant fastening solution that enhances operational reliability.

Specification Summary & Compliance

This screw features 1/4"-20 UNC coarse threads with a Class 2A thread fit for standard dimensional accuracy and ease of assembly. It is manufactured from 18-8 stainless steel with a passivated finish and includes a silicone O-ring rated for temperatures from -80° to 400°F. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards in industrial applications.