S-98070A250 6-32 x 1/2" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone rubber O-ring creates reliable seals against fluids and gases, preventing leaks in demanding industrial environments.
• Exceptional Temperature & Pressure Resistance: Withstands extreme conditions from -150° to 500° F and pressures up to 20,000 psi, ensuring long-term reliability in harsh applications.
• Corrosion-Resistant Construction: Made from durable 18-8 stainless steel with passivated finish for enhanced corrosion protection in humid or chemical-exposed settings.
• Precision Thread Engagement: Class 2A UNC coarse threads provide consistent, reliable fastening with reduced risk of cross-threading during installation.
• Flush Mounting Capability: Standard flat head design sits flush with surfaces, ideal for applications where protrusion must be minimized.
• Regulatory Compliance Assurance: Meets RoHS 3 and REACH standards, making them suitable for regulated industries and international markets.
• Optimized Drive Performance: Phillips No. 1 drive style offers secure tool engagement and efficient installation with standard driving tools.

Professional Applications & Engineering Value

This 6-32 UNC flat head Phillips screw delivers critical engineering value in applications where sealing integrity cannot be compromised. The combination of 18-8 stainless steel construction and silicone rubber O-ring addresses common industrial challenges including fluid containment, pressure differentials, and thermal cycling. Engineers specify these sealing screws for hydraulic systems, pneumatic equipment, and processing machinery where passivated finish provides additional corrosion resistance in challenging environments. The fully threaded design ensures maximum engagement in thin materials while the 100° countersink angle facilitates proper seating in standard chamfered holes. These features make them particularly valuable in OEM manufacturing, maintenance operations, and retrofit projects requiring dependable pressure-resistant fasteners.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit per UNC standards with precise 6-32 thread size and coarse thread spacing for reliable engagement. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met. The 1/2" length and 0.279" head diameter provide standardized dimensions for consistent performance across applications requiring flat head profile fasteners with integrated sealing capabilities.