S-92205A517 5/16"-18 x 5/8" Sealing Hex Head Screws
Sealing Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Reliable high-pressure sealing up to 20,000 psi with silicone rubber O-ring, preventing leaks in critical applications
- Exceptional temperature tolerance from -80° to 400°F, maintaining performance in extreme thermal conditions
- High tensile strength of 80,000 psi ensures secure fastening and resistance to mechanical stress
- Precise Class 2A coarse thread fit provides easy installation and consistent engagement in UNC threaded holes
- External hex drive design allows for high-torque application with standard tools, reducing assembly time
- Full threading along 5/8" length delivers maximum grip and load distribution across the entire fastener
Professional Applications & Engineering Value
This 5/16"-18 UNC hex head screw with silicone rubber O-ring addresses critical sealing challenges in industrial applications where pressure integrity is paramount. The 18-8 stainless steel construction provides excellent corrosion resistance for equipment exposed to moisture, chemicals, or outdoor elements, while the Rockwell B85 hardness ensures durability against wear and galling. The coarse UNC thread with Class 2A fit facilitates quick assembly in manufacturing lines, reducing installation errors. Engineered for high-pressure systems up to 20,000 psi, this fastener prevents fluid or gas leaks in hydraulic systems, pumps, and pressure vessels, making it essential for industrial fastening solutions requiring both mechanical strength and environmental sealing.
Specification Summary & Compliance
This hex head screw features precise 5/16"-18 UNC coarse threads with Class 2A thread fit for standard industrial tolerances. Manufactured from 18-8 stainless steel with full threading along the 5/8" length, it accommodates maximum hole diameters of 0.336". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence for global industrial use.
