S-91223A225 5/16"-18 x 1" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity and joint integrity in demanding applications
• Precise Class 2A thread fit provides smooth assembly and consistent clamping force with standard UNC coarse threads
• Ultra-low socket head design allows for compact installations and flush mounting in space-constrained applications
• 5/32" hex drive compatibility offers secure tool engagement and reduced risk of stripping during installation
• Full threading along the 1" length enables maximum adjustability and uniform stress distribution
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and suitability for global industrial markets

Professional Applications & Engineering Value

This 316 stainless steel socket head cap screw is engineered to address critical challenges in industrial settings where corrosion resistance and mechanical reliability are paramount. The UNC coarse thread design facilitates quick assembly and reduces cross-threading risks, while the Class 2A thread fit maintains precise tolerances for vibration-resistant connections. With a Rockwell B70 hardness and 70,000 psi tensile strength, it withstands high-stress conditions in machinery, marine equipment, and chemical processing systems. The ultra-low head profile and fully threaded shank provide design flexibility for compact assemblies, ensuring long-term performance without galvanic corrosion or degradation, even in saline or acidic environments.

Specification Summary & Compliance

This socket head cap screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent dimensional accuracy. Manufactured from 316 stainless steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring it is free of restricted hazardous substances. The fastener maintains precise head diameter tolerances (-0.005" to 0.005") and is fully threaded for uniform engagement, supporting reliable performance in regulated industrial applications.