S-92949A902 3-48 x 1" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for high-stress applications
• Precision thread engagement with Class 3A UNC coarse threads providing secure, vibration-resistant fastening
• Efficient installation through hex drive design allowing high torque application without stripping
• Full threading capability enabling complete engagement along the entire 1" length for maximum holding power
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
• Optimized head design featuring a rounded button profile that reduces surface protrusion while maintaining structural integrity

Professional Applications & Engineering Value

Engineered for precision industrial applications, these 3-48 UNC rounded head screws solve critical fastening challenges in machinery, electronics, and aerospace components. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, extending service life in demanding environments. The Class 3A thread fit ensures precise engagement with mating components, eliminating play and vibration-induced loosening. The hex drive design allows for high-torque installation without cam-out, making them ideal for confined spaces where reliability is paramount. These fully threaded button head screws deliver uniform stress distribution and maximum clamp load, making them essential for applications requiring both aesthetic appeal and mechanical performance.

Specification Summary & Compliance

This rounded head screw features precise Class 3A UNC coarse threads with right-hand direction, ensuring optimal fit and performance. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and quality assurance. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restriction and REACH (EC 1907/2006) regulations for chemical safety. With a thread diameter of 0.099" and standardized 1" length, these screws maintain consistent performance across industrial applications while adhering to strict international quality standards.