S-90276A096 3-48 x 1/2" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for reliable performance in demanding industrial environments
• Superior holding power with 60,000 psi tensile strength and Rockwell B69 hardness for secure, long-lasting assemblies
• Quick installation and removal through standard slotted drive design compatible with common tools
• Optimized thread engagement with fully threaded UNC coarse pattern ensuring maximum grip in various materials
• Precise dimensional consistency with Class 2A thread fit for smooth assembly and reduced cross-threading risks
• Broad regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial applications
• Versatile rounded head profile providing a finished appearance while minimizing snagging in assembled components

Professional Applications & Engineering Value

These 3-48 UNC zinc-plated steel rounded head slotted screws deliver exceptional engineering value across industrial assembly lines. The zinc-plated steel construction provides a protective barrier against oxidation and chemical exposure, significantly extending service life in humid or corrosive environments. With coarse UNC threading and full thread coverage, these fasteners maintain superior pull-out resistance in soft metals, plastics, and wood substrates. The standard rounded head profile and slotted drive design enable quick installation in confined spaces while maintaining a professional finish. These characteristics make them ideal for electrical enclosures, machinery panels, automotive components, and precision equipment where vibration resistance and consistent clamping force are critical.

Specification Summary & Compliance

These industrial fasteners maintain Class 2A thread fit tolerance per UNC standards, ensuring consistent mating with corresponding nuts and threaded holes. Manufacturing specifications strictly adhere to ASME B18.6.3 dimensional requirements for slotted head machine screws. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, confirming restriction of hazardous substances. The combination of 60,000 psi tensile strength and Rockwell B69 hardness guarantees mechanical performance under sustained loads while the zinc plating provides sacrificial corrosion protection.