S-90275A206 8-32 x 2 1/4" ASME B18.6.3 Steel Slotted 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 holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable fastening performance
• Optimized load distribution through partial threading design that maximizes grip strength while minimizing material stress
• Precision flush mounting with standard 82° countersink angle and flat head profile for seamless surface integration
• Enhanced installation efficiency with Class 2A thread fit ensuring smooth engagement and reduced assembly time
• Broad compatibility with UNC coarse threading (8-32) suitable for various industrial materials and applications
• Regulatory confidence with full compliance to ASME B18.6.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical engineering solutions for industrial fastening challenges where surface flushness and reliable performance are paramount. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments, while the partial threading design ensures optimal clamping force distribution without compromising material integrity. The 82° countersink angle and flat head profile enable perfect flush mounting in machinery, equipment panels, and structural assemblies, eliminating protrusions that could interfere with operation. With coarse UNC threading and Class 2A fit, these screws offer quick installation in various materials while maintaining consistent torque performance. Ideal for industrial maintenance, machinery assembly, and electronic enclosures, these fasteners combine dimensional precision with the durability needed for long-term reliability in demanding applications.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance ensuring precise engagement and consistent performance. The UNC coarse threading (8-32) follows standardized inch system measurements with controlled thread spacing for reliable fastening. These screws maintain full compliance with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, confirming they contain no restricted substances. The manufacturing process adheres to strict quality controls delivering screws with verified 60,000 psi tensile strength and Rockwell B70 hardness for guaranteed mechanical performance in industrial applications.