S-90276A099 3-48 x 3/4" ASME B18.6.3 Steel Round Head Slotted 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 B69 hardness for reliable, vibration-resistant fastening
• Quick installation and removal through standard slotted drive design compatible with common hand tools
• Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure connections in various materials
• Full-length threading provides maximum grip along the entire 3/4" shaft for enhanced load distribution
• Regulatory compliance meets ASME B18.6.3 specifications while being RoHS 3 and REACH compliant for global applications
• Versatile rounded head profile offers smooth surface finish and reduced risk of snagging in assembly operations

Professional Applications & Engineering Value

These zinc-plated steel rounded head screws deliver critical performance advantages for industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The combination of UNC coarse threading and Class 2A thread fit ensures rapid installation with minimal cross-threading risk, while the fully threaded design maximizes contact surface for superior load distribution. The slotted drive system maintains compatibility with standard tools, making these 3-48 UNC screws ideal for maintenance operations, equipment manufacturing, and electronic enclosures where consistent, repeatable fastening is essential. The zinc plating provides sacrificial protection against environmental factors, extending service intervals in challenging industrial settings.

Specification Summary & Compliance

This 3-48 UNC screw features precise Class 2A thread fit tolerances with a thread diameter of 0.099" and coarse thread spacing. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. The inch system measurements include a 0.187" head diameter and 3/4" length with fully threaded construction.