S-97690A166 8-32 x 5/16" ASME B18.6.3 Steel Pan Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Enhanced torque transmission and reduced cam-out thanks to the T20 Torx drive design for secure fastening operations
• High mechanical strength and durability with Rockwell B70 hardness, ensuring reliable performance under stress
• Precise thread engagement with Class 2A fit and UNC coarse threads for quick assembly and vibration resistance
• Compliance with industry standards including ASME B18.6.3, ensuring consistent quality and interchangeability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance for safe use in regulated applications
• Complete threading coverage for maximum grip and load distribution across the entire fastener length

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel screws are engineered to address common industrial challenges such as fastener loosening due to vibration and corrosion-induced failure. The Torx pan head design with T20 drive provides superior torque control, minimizing tool slippage during high-stress assembly in machinery, automotive, and electronics enclosures. With a black painted finish and coarse threading, they offer both aesthetic consistency and rapid installation in production lines. The fully threaded construction ensures uniform stress distribution, making them ideal for applications requiring consistent clamping force and durability in harsh operating conditions.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and adheres to ASME B18.6.3 manufacturing standards for dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. The UNC coarse thread profile and right-hand threading provide reliable performance in standard industrial assemblies.