S-90283A540 1/4"-20 x 3/4" ASME B18.6.3 Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated steel construction for long-lasting performance in harsh industrial environments
• Superior holding power with fully threaded design ensuring maximum engagement and vibration resistance
• High tensile strength rating of 60,000 psi provides reliable performance under heavy loads and stress conditions
• Precise Class 2A thread fit enables smooth installation and consistent mating with standard UNC nuts and components
• Easy manual installation with slotted drive design compatible with standard screwdrivers for quick assembly
• Optimized pan head profile offers excellent bearing surface while maintaining low-profile appearance
• Comprehensive compliance with major industrial standards ensures reliability and regulatory acceptance

Professional Applications & Engineering Value

This zinc-plated steel slotted pan head screw delivers critical engineering advantages for industrial assembly applications where corrosion resistance and structural integrity are paramount. The combination of UNC coarse threading and Class 2A fit provides excellent engagement in various materials while resisting vibration-induced loosening. The fully threaded design maximizes holding power across the entire fastener length, making it ideal for applications requiring consistent clamping force. With 60,000 psi tensile strength and Rockwell B60 hardness, this fastener withstands substantial mechanical stress in machinery, equipment manufacturing, and structural assemblies. The slotted pan head configuration offers both aesthetic appeal and practical installation benefits, while the zinc plating provides essential protection against environmental degradation in demanding industrial settings.

Specification Summary & Compliance

This 1/4"-20 x 3/4" slotted pan head screw features precise UNC coarse threading with Class 2A thread fit tolerance for consistent performance. Manufactured to meet ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations regarding chemical substances, ensuring safe use across various industrial applications while maintaining environmental responsibility.