S-90357A148 3/8"-16 x 5/16" Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
• Maximum space efficiency thanks to the ultra-low socket head profile that fits in confined assembly areas
• Exceptional thread reliability with Class 3A precision fit ensuring consistent engagement and reduced cross-threading risks
• High-load capacity from 140,000 psi tensile strength and Rockwell C32 hardness for critical structural applications
• Optimized drive performance through 3/16" hex drive design that prevents cam-out and provides secure torque transmission
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Versatile installation capability with UNC coarse threads that enable quick assembly and disassembly in various materials

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws deliver critical engineering solutions where space constraints meet high-strength requirements. The ultra-low profile head design allows installation in compact machinery, automotive assemblies, and precision equipment where standard fasteners cannot fit. The Class 3A thread fit combined with UNC coarse threading ensures rapid installation while maintaining vibration resistance in dynamic applications. With 140,000 psi tensile strength, these screws provide reliable performance in heavy-load scenarios including industrial machinery, manufacturing equipment, and structural frameworks. The black-oxide surface treatment offers enhanced corrosion protection without compromising dimensional accuracy, making these fasteners ideal for both indoor and outdoor industrial environments where durability and precision are paramount.

Specification Summary & Compliance

This 3/8"-16 UNC socket head cap screw features precise Class 3A thread fit with length tolerance of -0.005" to 0.005" for consistent installation performance. Manufactured to standard inch system specifications with fully threaded design and right-hand thread direction. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.