S-92205A581 5/16"-18 x 3/4" Sealing Hex Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone O-ring creates a reliable seal, preventing leaks in high-pressure applications up to 20,000 psi.
• Exceptional Temperature Resilience: O-ring withstands extreme temperatures from -80° to 400° F, ensuring consistent performance in volatile environments.
• High Tensile Strength & Durability: 80,000 psi tensile strength and Rockwell B85 hardness provide robust, long-lasting fastening for demanding industrial use.
• Excellent Corrosion Resistance: 18-8 stainless steel construction offers reliable protection against rust and corrosion, extending service life.
• Precision Thread Fit: UNC coarse threads with Class 2A fit ensure easy installation and secure, vibration-resistant connections.
• Convenient External Hex Drive: Standard hex head allows for quick and straightforward installation with common tools.
• Regulatory Compliance Assurance: Meets RoHS 3 and REACH standards, ensuring safety and environmental responsibility in global supply chains.

Professional Applications & Engineering Value

This 18-8 stainless steel hex head screw is engineered to solve critical sealing and durability challenges in industrial settings. The silicone O-ring provides a dependable seal against fluids and gases, making it ideal for hydraulic systems, pumps, and compressors where high-pressure sealing up to 20,000 psi is required. Its fully threaded UNC coarse thread design ensures maximum grip and load distribution, while the external hex drive facilitates efficient installation in confined spaces. The corrosion-resistant material and wide temperature range suitability make it a versatile choice for automotive, marine, and chemical processing applications, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC coarse thread with Class 2A fit for precise dimensional accuracy and ease of assembly. It is fully threaded with a length of 3/4" and head dimensions of 13/64" height and 1/2" width. Manufactured from 18-8 stainless steel with a silicone O-ring, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial fasteners.