S-91794A801 5/16"-18 x 1 1/2" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction for long-lasting performance in harsh environments
• Enhanced driving engagement with the high-profile fillister head design providing better tool clearance and torque application
• Reliable fastening strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Quick installation through coarse UNC threading and Class 2A fit ensuring smooth engagement and time savings
• Full-length threading offering consistent grip along the entire 1-1/2" length for secure fastening
• Industry compliance meeting ASME B18.6.3 specifications for dimensional accuracy and performance reliability
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

This slotted fillister head screw delivers exceptional engineering value where corrosion resistance and reliable fastening are critical. The 18-8 stainless steel composition prevents rust and degradation in industrial environments, while the high-profile rounded head design allows for deeper tool engagement and superior torque transmission compared to standard flat heads. The coarse UNC threading with Class 2A fit ensures rapid installation and secure holding power in machinery, electrical enclosures, and precision equipment. With full threading along its 1-1/2" length, this screw provides consistent clamping force across the entire engagement surface, making it ideal for applications requiring vibration resistance and long-term reliability in manufacturing, automation, and marine environments.

Specification Summary & Compliance

This screw features precision 5/16"-18 UNC coarse threading with Class 2A thread fit per ASME standards, ensuring dimensional accuracy and proper engagement. The manufacturing process adheres to ASME B18.6.3 specifications for dimensional consistency and performance reliability. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming the absence of restricted substances. The fully threaded design maintains uniform thread engagement throughout the 1-1/2" length, while the Rockwell B55 hardness and 70,000 psi tensile strength guarantee mechanical integrity in demanding industrial applications.