S-90275A636 3/8"-16 x 3" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Exceptional holding power with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Precise thread engagement with Class 2A thread fit ensuring reliable installation and vibration resistance
• Optimal flush mounting with standard 82° countersink angle for seamless surface integration
• Enhanced installation efficiency with fully threaded design providing maximum grip along the entire 3" length
• Industry-standard compatibility with UNC coarse threads and right-hand direction for broad application use
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head slotted screw delivers critical engineering solutions for industrial assembly challenges. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments, while the coarse thread design ensures rapid installation and superior pull-out resistance in wood, metal, and composite materials. The fully threaded configuration maximizes surface contact area, distributing stress evenly to prevent joint failure under vibration or dynamic loads. With its standard 82° countersink angle, this fastener creates flush surfaces in machinery, structural frameworks, and equipment housings, eliminating protrusions that could interfere with operation or safety. The combination of 60,000 psi tensile strength and Rockwell B70 hardness makes it ideal for demanding applications where fastener integrity is non-negotiable.

Specification Summary & Compliance

This flat head screw maintains Class 2A thread fit tolerances per UNC standards, ensuring precise dimensional accuracy for consistent performance. Manufacturing complies with ASME B18.6.3 specifications for dimensional and mechanical requirements. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substance restrictions. The inch system measurements include 3/8"-16 UNC thread size with coarse spacing and 3" fully threaded length, providing reliable standardization across industrial applications.