S-97690A179 1/4"-20 x 3/4" ASME B18.6.3 Steel Pan Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Enhanced torque transmission through T30 Torx drive system, reducing cam-out and tool wear
• Optimized thread engagement with UNC coarse spacing and Class 2A fit for reliable fastening in various materials
• Exceptional mechanical strength with Rockwell B70 hardness to withstand high stress applications
• Streamlined installation with fully threaded design and right-hand direction for efficient assembly
• Professional appearance with black painted finish that maintains visibility while resisting chipping
• Broad compatibility with standard 1/4"-20 threaded components across industrial equipment

Professional Applications & Engineering Value

These zinc-plated steel Torx pan head screws deliver critical performance advantages for industrial assembly applications where vibration resistance and consistent clamping force are paramount. The T30 Torx drive system provides superior torque transfer compared to traditional drive types, minimizing fastener damage during high-torque applications in machinery, automotive, and electrical enclosures. The combination of Rockwell B70 hardness and UNC coarse threading ensures reliable performance in both soft and hard materials, while the rounded pan head profile offers a low-profile installation that reduces snagging hazards. The black painted finish enhances corrosion protection while providing visual contrast for quality control inspections in manufacturing environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance across applications. These screws conform to ASME B18.6.3 mechanical and dimensional specifications, ensuring interchangeability with standard components. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding chemical safety, making them suitable for global industrial supply chains. The 1/4"-20 UNC coarse thread with right-hand direction follows industry-standard threading specifications for broad compatibility.