S-90471A453 3/8"-16 x 3/4" ASME B18.6.3 Steel Phillips Flat Head Screws
Steel Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Precision thread engagement with Class 2A fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Optimal flush mounting with standard 100° countersink angle for seamless surface integration and professional finishes
- Enhanced driving efficiency with No. 4 Phillips drive providing positive torque transfer and reduced cam-out risk
- Full-length threading delivering maximum grip along the entire 3/4" shaft for superior holding power
- Regulatory compliance assurance meeting ASME B18.6.3 standards plus RoHS 3 and REACH environmental directives
Professional Applications & Engineering Value
These 3/8"-16 UNC flat head screws deliver critical engineering solutions where surface flushness and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assemblies, and outdoor applications. The coarse UNC threading ensures rapid installation and superior resistance to vibrational loosening in high-stress environments. With fully threaded design and Class 2A thread fit, these Phillips drive screws maintain consistent clamping force across the entire engagement length, preventing joint failure in critical assemblies. The standardized 100° countersink angle guarantees proper seating in prepared holes, eliminating protrusions that could interfere with moving components or compromise safety.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance for precision engagement. Features 3/8"-16 UNC coarse threads with right-hand orientation and standard flat head profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Mechanical properties include 60,000 psi tensile strength and Rockwell B70 hardness for consistent performance under load.
