S-94135A453 1/4"-20 x 1" ASME B18.6.3 Tamper-Resistant Drilled Spanner Stainless Steel Truss Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced load distribution from the wide truss head design, reducing surface damage and improving joint integrity
• High mechanical strength with 70,000 psi tensile strength and Rockwell B87 hardness for demanding applications
• Secure tamper-resistant installation using the drilled spanner drive, preventing unauthorized removal
• Reliable thread engagement with fully threaded UNC coarse spacing and Class 2A fit for quick assembly and vibration resistance
• Industry-standard compliance meeting ASME B18.6.3 specifications for consistent performance and interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance, ensuring safe use in regulated industries

Professional Applications & Engineering Value

These 1/4"-20 UNC rounded head screws deliver exceptional engineering value in industrial settings where corrosion resistance and structural reliability are paramount. The 18-8 stainless steel composition withstands corrosive environments while maintaining 70,000 psi tensile strength, making them ideal for machinery, electrical enclosures, and outdoor equipment. The truss head profile provides a larger bearing surface that distributes clamping force effectively, preventing surface damage on softer materials. With fully threaded coarse spacing and Class 2A thread fit, installation is rapid and secure, even in high-vibration applications. The drilled spanner drive offers tamper-resistant fastening for security-sensitive assemblies, while compliance with ASME B18.6.3 standards ensures dimensional consistency across industrial maintenance and manufacturing operations.

Specification Summary & Compliance

This 1/4"-20 UNC screw features precise Class 2A thread fit with coarse thread spacing and full threading along its 1" length. Manufacturing adheres to ASME B18.6.3 specifications for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety standards for industrial fastener applications.