S-91735A384 1/4"-20 x 2 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments thanks to 316 stainless steel construction with passivated finish
• Superior mechanical strength with 80,000 PSI tensile strength and Rockwell B85 hardness for reliable performance under stress
• Optimal thread engagement provided by fully threaded UNC coarse thread design for maximum holding power
• Precise Class 2A thread fit ensures smooth installation and consistent performance in assembly operations
• Industry-standard compliance with ASME B18.6.3 specifications for guaranteed dimensional accuracy and reliability
• Easy installation and removal with Phillips No. 3 drive and rounded pan head design for efficient assembly processes
• Environmental regulation compliance meeting RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

This 316 stainless steel pan head machine screw delivers exceptional performance in demanding industrial applications where corrosion resistance and mechanical reliability are critical. The combination of UNC coarse threading and fully threaded design provides superior vibration resistance and load distribution, making it ideal for machinery assembly, marine equipment, chemical processing installations, and food processing machinery. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, significantly extending service life in humid, salty, or chemically aggressive environments. With its Phillips No. 3 drive and rounded pan head profile, installation is streamlined while maintaining secure fastening in high-stress applications where reliability cannot be compromised.

Specification Summary & Compliance

This machine screw features precise 1/4"-20 UNC coarse threads with Class 2A thread fit for consistent installation performance. Manufactured to ASME B18.6.3 dimensional standards, it ensures interchangeability and reliability in industrial applications. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use across various industries without regulatory concerns. The combination of precise threading, material certification, and standardized dimensions guarantees performance consistency in professional applications.