S-91773A140 1-72 x 3/4" ASME B18.6.3 Stainless Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance through 18-8 Stainless Steel construction and passivated finish, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for demanding applications
• Precise thread engagement with Class 2A UNF fine threads providing secure fastening and vibration resistance
• Optimized drive performance featuring Phillips No. 0 drive for efficient installation and reduced cam-out risk
• Full threading along the 3/4" length enables maximum adjustability and holding power throughout the entire fastener
• Industry-standard compliance meeting ASME B18.6.3 specifications for guaranteed dimensional accuracy and performance
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

This 1-72 UNF rounded head Phillips screw delivers critical performance advantages for precision assembly applications where corrosion resistance and mechanical reliability are paramount. The combination of 18-8 Stainless Steel material and passivated finish provides exceptional protection against oxidation and chemical exposure, making it ideal for marine, chemical processing, and outdoor equipment applications. The fine UNF threading with Class 2A fit ensures precise engagement in tapped holes, reducing the risk of cross-threading while providing superior vibration resistance in dynamic environments. The rounded head design distributes clamping force evenly, preventing surface damage while the Phillips drive offers familiar, efficient installation. These fully threaded screws are engineered for applications requiring consistent holding strength along the entire fastener length, from electronic enclosures to precision instrumentation and aerospace components where ASME B18.6.3 compliance is mandatory.

Specification Summary & Compliance

This precision fastener features Class 2A thread fit with UNF (Unified National Fine) 1-72 threading, ensuring dimensional accuracy per ASME B18.6.3 manufacturing standards. The 3/4" length provides consistent performance with full threading from end to end. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, confirming the absence of restricted substances. Mechanical properties include Rockwell B100 hardness and 100,000 psi tensile strength, meeting industrial requirements for high-strength fastening applications.