S-99468A210 1/4"-20 x 1 3/4" ASME B18.6.3 Aluminum Slotted Flat Head Screws

Key Features & Benefits at a Glance

• High-strength aluminum construction provides excellent durability with 50,000 psi tensile strength while maintaining lightweight properties
• Superior corrosion resistance from 2024 aluminum alloy ensures long-lasting performance in demanding industrial environments
• Precision Class 2A thread fit guarantees reliable engagement and consistent fastening performance in assembly applications
• Standard 82° countersink angle allows for flush mounting and clean, professional-looking installations
• Fully threaded design maximizes grip length and provides uniform load distribution across the entire fastener
• Rockwell B55 hardness offers optimal balance between machinability and resistance to deformation under load
• Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH standards ensures regulatory acceptance and environmental safety

Professional Applications & Engineering Value

This 1/4-20 UNC flat head screw manufactured from 2024 aluminum delivers exceptional engineering value in applications where weight reduction is critical without compromising structural integrity. The coarse thread spacing and Class 2A thread fit provide rapid installation and reliable performance in vibration-prone environments. The slotted drive style offers compatibility with standard tools while the 82° countersink angle ensures seamless flush mounting in precision assemblies. Ideal for aerospace components, electronic enclosures, and transportation equipment, this fully threaded fastener combines the corrosion resistance of aluminum with the mechanical strength needed for demanding industrial applications. The right-hand thread direction and inch system measurement make it particularly valuable for maintenance and repair operations in North American manufacturing facilities.

Specification Summary & Compliance

This flat head screw features precision 1/4"-20 UNC threads with Class 2A thread fit tolerance per ASME standards, ensuring consistent dimensional accuracy and reliable performance. The fastener is manufactured in compliance with ASME B18.6.3 specifications for dimensional requirements and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in regulated industries and international markets. The combination of Rockwell B55 hardness and 50,000 psi tensile strength provides verified mechanical performance data for engineering calculations and quality assurance protocols.