S-90273A192 8-32 x 3/8" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional holding power from 60,000 psi tensile strength and Rockwell B70 hardness for reliable, vibration-resistant connections
• Efficient installation with No. 2 Phillips drive and standard 82° countersink angle for flush mounting without protruding heads
• Optimized thread engagement through full threading and Class 2A UNC coarse threads, ensuring quick assembly and reduced cross-threading risks
• Broad compatibility with standard 8-32 UNC components, simplifying inventory management and replacement procedures
• Regulatory compliance assurance meeting ASME B18.6.3 specifications, RoHS 3, and REACH standards for global industrial applications
• Enhanced load distribution from flat head design that sits flush with surfaces, preventing snagging and improving aesthetic finish

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical engineering solutions where surface-flush fastening and high tensile strength are paramount. The zinc-plated steel construction provides essential corrosion protection for machinery, electrical enclosures, and automotive assemblies exposed to moderate environmental conditions. With fully threaded coarse UNC patterning and Class 2A fit, they maintain consistent clamping force in sheet metal, plastic components, and structural frameworks while resisting vibrational loosening. The 82° countersink angle ensures seamless integration with standard chamfered holes, eliminating protrusions in conveyor systems, manufacturing equipment, and precision instruments. These Phillips drive screws combine rapid installation with the durability needed for high-cycle production environments and maintenance operations.

Specification Summary & Compliance

Manufactured to ASME B18.6.3 standards with Class 2A thread fit tolerances for consistent engagement. The UNC coarse threading (8-32) maintains ISO-compatible dimensional accuracy across the 3/8" length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety in global supply chains. Mechanical properties include verified 60,000 psi tensile strength and Rockwell B70 hardness for guaranteed performance in industrial fastening applications.