S-91735A619 3/8"-16 x 1 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction with passivated finish
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable performance under heavy loads
• Optimized thread engagement through Class 2A thread fit and coarse UNC threading for faster installation and vibration resistance
• Enhanced driving efficiency with Phillips No. 4 drive that prevents cam-out and ensures secure fastening
• Full-threaded design provides maximum grip along the entire 1-1/4" length for superior holding power
• Comprehensive regulatory compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH environmental standards
• Versatile rounded pan head profile offers clean appearance and comfortable clearance in various applications

Professional Applications & Engineering Value

These 316 stainless steel rounded head screws deliver exceptional performance in demanding industrial environments where corrosion resistance and mechanical reliability are critical. The combination of 80,000 psi tensile strength and Rockwell B85 hardness ensures these fully threaded fasteners maintain integrity under sustained loads and vibration. The passivated finish significantly enhances the natural corrosion resistance of 316 stainless steel, making these UNC coarse thread screws ideal for chemical processing, marine applications, food processing equipment, and outdoor installations. The Phillips drive system with No. 4 size provides efficient torque transfer while the Class 2A thread fit guarantees consistent engagement in tapped holes, reducing installation time and improving assembly quality in high-volume manufacturing operations.

Specification Summary & Compliance

These 3/8"-16 UNC screws feature Class 2A thread fit per ASME B18.6.3 specifications, ensuring precise dimensional accuracy and interchangeability. The manufacturing process adheres to ASME B18.6.3 standards for dimensional requirements and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) compliance for chemical safety. The right-hand coarse threading and fully threaded design provide optimal performance in general industrial applications requiring reliable fastening solutions.