S-91772A096 3-48 x 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for long-lasting performance in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness to withstand high-stress applications
• Reliable thread engagement through Class 2A thread fit and UNC coarse threading for secure fastening and vibration resistance
• Optimized drive efficiency with Phillips No. 1 drive style providing positive torque transfer and reduced cam-out risk
• Versatile rounded pan head design offering low-profile installation and improved clearance in confined spaces
• Full threading capability ensuring maximum grip length and uniform load distribution across the entire fastener
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations (RoHS 3/REACH) for global supply chain compatibility

Professional Applications & Engineering Value

These 3-48 UNC rounded head screws deliver critical engineering solutions where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for marine equipment, food processing machinery, and outdoor industrial applications. The combination of coarse UNC threading and Class 2A thread fit ensures rapid installation and secure fastening in softer materials or applications requiring frequent disassembly. The Phillips drive system with No. 1 size offers superior torque transmission while the rounded pan head design distributes clamping force effectively without damaging mating surfaces. These fully threaded fasteners are engineered to maintain structural integrity under continuous vibration and thermal cycling, providing long-term reliability in demanding assembly operations.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread profile (3-48 thread size). Complies with ASME B18.6.3 mechanical and dimensional specifications. Meets environmental compliance requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. Features include 1/2" length, 0.193" head diameter, fully threaded design, and right-hand thread direction.