S-92205A513 1/4"-20 x 3/8" Sealing Hex Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with silicone rubber O-ring that maintains integrity across extreme temperatures from -80° to 400° F
• Exceptional pressure resistance rated for 20,000 psi maximum pressure, ensuring reliable performance in high-pressure industrial systems
• High tensile strength construction with 80,000 psi rating provides excellent mechanical durability and load-bearing capacity
• Corrosion-resistant 18-8 stainless steel material offers long-lasting protection against rust and degradation in harsh environments
• Precision Class 2A thread fit with UNC coarse threading ensures easy installation and secure fastening in demanding applications
• Fully threaded design maximizes engagement strength and provides consistent sealing along the entire screw length
• External hex drive configuration allows for straightforward installation and removal with standard tools

Professional Applications & Engineering Value

This 1/4"-20 UNC hex head screw delivers critical sealing capability for industrial equipment operating under extreme conditions. The combination of 18-8 stainless steel construction and silicone rubber O-ring creates a reliable barrier against fluid and gas leakage in high-pressure systems up to 20,000 psi. The coarse thread design with Class 2A fit provides excellent engagement in various materials while the fully threaded configuration ensures maximum sealing surface contact. Ideal for hydraulic systems, pressure vessels, and industrial machinery where pressure-rated sealing fasteners are essential for operational safety and performance reliability across temperature extremes from -80° to 400° F.

Specification Summary & Compliance

This hex head sealing screw features precision 1/4"-20 UNC coarse threads with Class 2A thread fit for consistent dimensional accuracy. Manufactured from 18-8 stainless steel with Rockwell B85 hardness and 80,000 psi tensile strength. The sealing system incorporates a silicone rubber O-ring compatible with maximum hole diameter of 0.269". Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications.