S-92224A222 1/4"-20 x 5/8" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black oxide steel coating for extended service life in demanding environments
• Superior holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable fastening performance
• Quick installation efficiency through Phillips No. 3 drive design that prevents cam-out and reduces assembly time
• Maximum thread engagement with fully threaded UNC coarse pattern ensuring secure connections in various materials
• Optimized load distribution via pan head design that provides a larger bearing surface for improved clamping force
• Precision thread compatibility with Class 2A fit guaranteeing consistent performance in standard applications
• Regulatory compliance assurance meeting ASME B18.6.3 specifications for quality and reliability

Professional Applications & Engineering Value

Engineered for industrial applications requiring robust fastening solutions, these black oxide steel screws deliver exceptional durability in machinery assembly, equipment manufacturing, and structural frameworks. The 1/4-20 UNC coarse thread configuration provides superior pull-out resistance in softer materials while maintaining vibration resistance in dynamic environments. With fully threaded design and pan head profile, these screws ensure maximum thread contact and even pressure distribution, addressing common challenges of joint loosening and material stress concentration. The Phillips drive system offers reliable torque transmission for efficient installation in high-volume production settings, making these rounded head screws ideal for automotive, construction, and industrial maintenance applications where consistent performance and regulatory compliance are critical.

Specification Summary & Compliance

This 1/4-20 x 5/8" screw maintains precision Class 2A thread fit per UNC standards with coarse thread spacing for optimal engagement. Manufactured in compliance with ASME B18.6.3 specifications, ensuring dimensional accuracy and mechanical performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming material safety and regulatory adherence for global industrial applications.