S-91772A543 1/4"-20 x 1 1/8" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional holding power from 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Quick installation and removal with No. 3 Phillips drive and standard pan head design
• Optimized thread engagement through fully threaded UNC coarse thread pattern for maximum grip
• Precise fit and interchangeability ensured by Class 2A thread fit and ASME B18.6.3 compliance
• Environmental regulation compliance meeting RoHS 3 and REACH standards for safe global usage
• Versatile right-hand threading compatible with standard industrial equipment and applications

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these pan head Phillips screws deliver critical performance advantages through their passivated 18-8 stainless steel composition. The material's inherent corrosion resistance prevents degradation in moisture-prone environments, while the fully threaded UNC coarse thread design ensures maximum surface contact for vibration-resistant fastening. The combination of 70,000 psi tensile strength and Rockwell B70 hardness provides reliable performance in structural assemblies, machinery, and equipment where load integrity is paramount. The No. 3 Phillips drive and standardized pan head profile enable efficient installation in confined spaces, reducing assembly time while maintaining consistent torque transmission. These rounded head screws are particularly valuable in manufacturing, automotive, and electrical enclosures where corrosion resistance, strength, and regulatory compliance are non-negotiable requirements.

Specification Summary & Compliance

This 1/4-20 x 1-1/8" screw features precise Class 2A thread fit tolerances and UNC coarse threading manufactured to ASME B18.6.3 specifications. The product maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial markets. Manufacturing standards guarantee dimensional accuracy for the 0.492" head diameter, 0.25" thread diameter, and 1-1/8" length specifications.