S-90273A415 3/8"-16 x 1/2" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Exceptional holding power through fully threaded design and coarse UNC thread pattern for maximum grip in various materials
• Optimized installation performance with Phillips No. 4 drive and undercut flat head design for flush mounting and reduced cam-out
• Precise countersinking capability with 82° angle ensuring secure, flush-fit installations in demanding applications
• Enhanced durability with Rockwell B70 hardness providing reliable strength and resistance to deformation
• Consistent thread engagement through Class 2A thread fit for reliable assembly and reduced cross-threading risks
• Regulatory compliance assurance meeting ASME B18.6.3 standards for quality and performance consistency

Professional Applications & Engineering Value

These 3/8"-16 UNC flat head screws deliver exceptional engineering value through their zinc-plated steel construction and precision design. The fully threaded configuration ensures maximum holding strength across the entire fastener length, while the coarse thread spacing provides superior grip in wood, metal, and composite materials. The undercut flat head profile with 82° countersink angle enables flush mounting in critical applications where surface protrusion is unacceptable. The Phillips No. 4 drive system offers reliable torque transmission during installation, reducing the risk of driver slippage and damage to the fastener head. These industrial-grade flat head screws are engineered to solve common fastening challenges in machinery assembly, electrical enclosures, and structural applications where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This 3/8"-16 UNC flat head screw features precise Class 2A thread fit tolerances and complies with ASME B18.6.3 manufacturing specifications. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence. Manufacturing standards guarantee dimensional accuracy with 0.375" thread diameter, 1/2" length, and 0.717" head diameter for consistent performance across industrial applications.