S-90273A257 10-24 x 3" 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
• Exceptional tensile strength rated at 60,000 psi ensures reliable performance under heavy loads and vibration
• Optimized drive engagement with Phillips No. 2 drive for secure installation and reduced cam-out risk
• Precision thread fit with Class 2A tolerance and UNC coarse threads for faster assembly and reduced cross-threading
• Flush mounting capability with standard 82° countersink angle for clean, professional finishes in visible applications
• Controlled thread engagement through partial threading allows for precise clamping force distribution
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for global project acceptance

Professional Applications & Engineering Value

These 10-24 UNC flat head screws deliver critical engineering solutions where flush surface mounting and high-strength fastening are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery frames, and outdoor enclosures, while the Rockwell B70 hardness maintains thread integrity during repeated installations. The coarse UNC threading enables rapid assembly in wood, plastic, and metal applications, significantly reducing installation time in production environments. With their 3" length and partial threading, these screws offer precise control over clamping pressure, preventing material distortion in sensitive assemblies. The Phillips No. 2 drive ensures compatibility with standard industrial tools, making them ideal for maintenance, manufacturing, and construction applications requiring reliable, vibration-resistant connections.

Specification Summary & Compliance

These flat head screws maintain Class 2A thread fit tolerance with UNC coarse thread profile (10-24 specification) and partial threading up to 1½" minimum thread length. Manufacturing conforms to ASME B18.6.3 standards for dimensional accuracy and performance. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, ensuring environmental responsibility and global market acceptance. The 82° countersink angle follows industry-standard specifications for proper seating in prepared holes.