S-98070A079 2-56 x 1/4" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with silicone rubber O-ring that prevents leaks in high-pressure environments up to 20000 psi
• Exceptional temperature resistance from -150° to 500° F, ensuring reliable operation in extreme thermal conditions
• High corrosion resistance thanks to 18-8 stainless steel construction and passivated finish for extended service life
• Precise thread engagement with Class 2A UNC coarse threads providing secure fastening and vibration resistance
• Flush mounting capability with standard flat head profile and 82° countersink angle for smooth surface finishes
• Easy installation and removal with Phillips No. 1 drive design for efficient assembly operations
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe industrial use

Professional Applications & Engineering Value

This 2-56 UNC flat head Phillips screw delivers critical sealing solutions for demanding industrial applications where pressure integrity and thermal stability are paramount. Engineered with 18-8 stainless steel and a passivated finish, it resists corrosion in harsh environments while the integrated silicone rubber O-ring maintains reliable seals across extreme temperature ranges from -150° to 500° F. The Class 2A thread fit ensures precise engagement in industrial sealing assemblies, preventing fluid or gas leakage under pressures up to 20000 psi. Ideal for precision equipment, hydraulic systems, and thermal processing units where flat head Phillips drive accessibility and flush mounting are essential for space-constrained designs.

Specification Summary & Compliance

This sealing screw features 2-56 UNC coarse threads with Class 2A thread fit for standardized compatibility, manufactured to precise dimensional specifications including 0.086" thread diameter and 1/4" length. The component maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide. The fully threaded design and standardized flat head profile with 82° countersink angle provide consistent performance across manufacturing and maintenance operations.