S-91735A314 5-40 x 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 load-bearing performance
• Optimized thread engagement with 5-40 UNC coarse threads and Class 2A fit ensuring secure fastening and vibration resistance
• Streamlined installation through fully threaded design and Phillips No. 2 drive for efficient assembly
• Enhanced durability with rounded pan head profile distributing stress evenly and preventing surface damage
• Regulatory compliance meeting ASME B18.6.3 standards and environmental regulations for global industrial use
• Versatile 1/4" length providing ideal fastening solutions for various material thicknesses in precision applications

Professional Applications & Engineering Value

Engineered for demanding environments, these 316 stainless steel rounded head screws deliver exceptional performance where corrosion resistance is critical. The passivated finish enhances surface protection against chemical exposure and oxidation, making them ideal for marine, chemical processing, and food industry applications. The combination of 5-40 UNC coarse threads with Class 2A fit ensures rapid installation and reliable thread engagement in various materials, while the fully threaded design provides consistent clamping force along the entire 1/4" length. The Phillips drive and rounded pan head profile facilitate efficient assembly in tight spaces, reducing installation time and improving workplace productivity. These screws address common industrial challenges including material degradation, vibration loosening, and regulatory compliance requirements.

Specification Summary & Compliance

This rounded head screw features precision 5-40 UNC coarse threads with Class 2A thread fit ensuring dimensional accuracy and reliable performance. Manufactured to ASME B18.6.3 specifications, the fastener delivers consistent quality and interoperability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for hazardous substance restrictions. Additional specifications include a 1/4" length, 0.125" thread diameter, and Rockwell B85 hardness rating, providing engineers with reliable performance data for critical applications.