S-90273A444 3/8"-16 x 4" 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 demanding environments
• High tensile strength of 60,000 psi ensures reliable fastening under substantial mechanical loads
• Precise Class 2A thread fit provides smooth installation and consistent engagement with mating components
• Standard 82° countersink angle allows for flush mounting and clean aesthetic finish
• Partially threaded design offers optimal grip length while reducing material usage and weight
• Phillips drive with No. 4 size enables efficient installation with common tools
• Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental responsibility

Professional Applications & Engineering Value

These 3/8"-16 UNC flat head screws deliver exceptional engineering value for industrial applications where reliability and precision are paramount. The zinc-plated steel construction provides essential corrosion protection for machinery, equipment assemblies, and structural components exposed to challenging environments. The coarse UNC thread design ensures rapid installation and superior resistance to vibration loosening, while the partially threaded configuration concentrates holding power where it's needed most. With Rockwell B70 hardness and 60,000 psi tensile strength, these flat head fasteners maintain integrity under heavy loads, making them ideal for manufacturing, construction, and maintenance applications requiring durable Phillips drive solutions that meet rigorous industry standards.

Specification Summary & Compliance

This 4" length flat head screw features Class 2A thread fit tolerance for precise mating with standard nuts and tapped holes. The 3/8"-16 UNC coarse thread configuration follows established industrial standards, while the standard 82° countersink angle ensures proper seating in prepared surfaces. Manufacturing and quality control adhere to ASME B18.6.3 specifications, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming these screws meet current industry requirements for performance and material safety.