S-94066A550 1/4"-20 x 2" ASME B18.6.3 Tamper-Resistant Drilled Spanner Stainless Steel Pan Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish for long-lasting performance in harsh environments
• High tensile strength of 80,000 psi ensures reliable, vibration-resistant fastening in demanding applications
• Precise Class 2A thread fit provides smooth installation and secure engagement with mating components
• Drilled spanner drive design offers tamper-resistant security while allowing easy installation with specialized tools
• Fully threaded UNC coarse spacing enables faster assembly and superior holding power across the entire length
• Rounded pan head profile combines low-profile design with excellent bearing surface for distributed load
• Industry compliance assurance with ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 1/4"-20 UNC threaded spanner screw delivers exceptional engineering value for industrial applications requiring both security and corrosion resistance. The 18-8 stainless steel construction with passivated finish provides superior protection against oxidation and chemical exposure, making it ideal for marine, food processing, and outdoor equipment applications. The drilled spanner drive addresses security concerns in public access areas while maintaining installation efficiency. With Rockwell B96 hardness and 80,000 psi tensile strength, this fully threaded fastener withstands high vibration environments and heavy loads without compromising integrity. The rounded pan head design offers a clean aesthetic while providing ample bearing surface for secure fastening in machinery, enclosures, and structural assemblies.

Specification Summary & Compliance

This 2-inch length spanner screw features precise Class 2A thread fit with UNC coarse thread spacing (1/4"-20) ensuring reliable mating with standard components. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for hazardous substance restrictions and chemical safety protocols.