S-90272A396 1/4"-20 x 9/16" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B70 hardness provides excellent durability and resistance to wear during installation
• Full UNC coarse threading delivers faster installation and superior grip in various materials
• Class 2A thread fit guarantees consistent, precise engagement with standard nuts and tapped holes
• Pan head design with Phillips No. 3 drive offers a low-profile, secure fastening solution with common tool compatibility
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met

Professional Applications & Engineering Value

This zinc-plated steel pan head screw is engineered to address common industrial fastening challenges, including corrosion, vibration loosening, and high-stress applications. The combination of 60,000 psi tensile strength and Rockwell B70 hardness makes it ideal for heavy-duty machinery, construction frameworks, and equipment assembly where reliability is critical. The fully threaded UNC coarse design ensures quick, secure installation in wood, metal, and plastic substrates, reducing assembly time while maintaining Class 2A precision. Its zinc plating provides a protective barrier against moisture and chemicals, extending fastener life in outdoor or corrosive environments. Commonly used in automotive, manufacturing, and structural applications, this screw delivers consistent performance where durability and compliance are non-negotiable.

Specification Summary & Compliance

This screw meets ASME B18.6.3 specifications for dimensional accuracy and performance, with Class 2A thread fit ensuring proper engagement in standard applications. It features UNC coarse threading (1/4"-20) and is fully threaded for maximum holding power. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms it is free from hazardous substances, making it suitable for regulated industries and environmentally conscious projects.