S-90275A619 3/8"-16 x 1/2" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Excellent flush mounting capability thanks to the undercut flat head profile and 82° countersink angle for seamless surface integration
• Reliable high-strength performance with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Quick and secure installation with coarse UNC threading and Class 2A fit ensuring vibration resistance and easy assembly
• Full thread engagement along the entire 1/2" length provides maximum holding power and load distribution
• Broad compatibility with standard slotted drive tools for convenient maintenance and installation
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw delivers exceptional engineering value in industrial fastening applications where flush surface mounting and high tensile strength are critical. The zinc-plated steel construction provides essential corrosion protection for machinery, equipment assemblies, and structural components exposed to harsh operating conditions. The undercut flat head design with 82° countersink angle ensures perfect seating in predrilled holes, eliminating protrusions that could interfere with moving parts or create safety hazards. With coarse thread spacing and Class 2A thread fit, these screws offer superior resistance to vibration loosening while enabling rapid installation in production environments. The combination of 60,000 psi tensile strength and full threading makes them ideal for applications requiring reliable load-bearing capacity across the entire fastened joint.

Specification Summary & Compliance

This flat head screw features precision UNC coarse threads with Class 2A fit tolerance for consistent performance across industrial applications. Manufacturing specifications strictly adhere to ASME B18.6.3 standards ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material restrictions adherence. Critical dimensions include 3/8"-16 thread size, 1/2" length, 0.717" head diameter, and 82° countersink angle, all manufactured to industrial-grade precision requirements.