S-98070A113 2-56 x 3/8" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish for long-term reliability in harsh environments
• Reliable pressure sealing up to 1500 psi using a silicone rubber O-ring that maintains integrity from -80° to 400° F
• Flush mounting with undercut flat head ensures a smooth surface finish and prevents material interference
• Precise Class 2A thread fit with UNC coarse threading for easy assembly and secure fastening
• Phillips drive compatibility with No. 1 drive size enables efficient installation using standard tools
• Full threading along the 3/8" length provides maximum grip and uniform load distribution
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance

Professional Applications & Engineering Value

This 2-56 UNC flat head Phillips screw is engineered for demanding industrial sealing applications where pressure integrity and chemical resistance are critical. The combination of 18-8 stainless steel construction with passivated finish provides exceptional corrosion protection in marine, chemical processing, and outdoor environments. The silicone rubber O-ring maintains its sealing properties across an extreme temperature range (-80° to 400° F), making it ideal for HVAC systems, fluid handling equipment, and automotive assemblies. The undercut flat head design ensures proper countersinking while the Phillips drive facilitates quick installation in confined spaces, reducing assembly time and improving production efficiency.

Specification Summary & Compliance

This sealing screw features Class 2A thread fit with UNC coarse threading (2-56 size) and fully threaded 3/8" length. The flat head has a 100° countersink angle and 0.172" diameter with undercut profile. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental compliance for global industrial applications.