S-92949A898 3-48 x 1/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish for long-lasting performance in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications
• Precise thread engagement with Class 3A fit and UNC coarse threads ensuring vibration resistance and secure fastening
• Efficient installation using 1/16" hex drive for high-torque application without cam-out in confined spaces
• Maximum holding power from fully threaded design providing consistent clamping force along the entire 1/8" length
• Regulatory compliance meeting ASME B18.3 standards plus RoHS 3 and REACH environmental regulations
• Streamlined profile with rounded button head design reducing snagging while maintaining aesthetic appeal

Professional Applications & Engineering Value

These 3-48 UNC rounded head screws deliver critical engineering solutions where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel construction with passivated finish provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for industrial equipment, electronic enclosures, and marine applications. The Class 3A thread fit with coarse UNC threading ensures rapid assembly while maintaining vibration resistance in high-stress environments. The combination of 70,000 psi tensile strength and fully threaded design creates superior clamping force distribution, preventing joint failure in critical assemblies. The hex drive configuration allows for high-torque installation without stripping, while the rounded head profile minimizes protrusion in space-constrained applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit tolerance and UNC coarse thread specification (3-48 thread size). Complies with ASME B18.3 manufacturing standards for dimensional accuracy and performance. Meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. Features right-hand thread direction with standard rounded head profile and complete threading along the 1/8" length.