S-90920A288 5/16"-18 x 3/4" ASME B18.6.3 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior torque transmission with T40 Torx drive for reduced cam-out and enhanced installation efficiency
• Excellent corrosion resistance provided by zinc-plated steel construction for extended service life in demanding environments
• High tensile strength of 60,000 psi ensures reliable performance under substantial mechanical loads
• Precise Class 2A thread fit guarantees smooth assembly and consistent fastening integrity
• Full UNC coarse threading enables faster installation and superior holding power in various materials
• Standard 82° countersink angle allows for flush mounting in prepared surfaces for clean, professional finishes
• Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH standards ensures quality and environmental responsibility

Professional Applications & Engineering Value

These zinc-plated steel flat head screws with T40 Torx drive deliver exceptional engineering value across industrial applications. The combination of 60,000 psi tensile strength and UNC coarse threading provides reliable fastening in machinery, equipment assembly, and structural components where vibration resistance is critical. The flat head design with 82° countersink solves the common problem of protruding fasteners, creating seamless surfaces while maintaining structural integrity. The zinc plating offers essential corrosion protection for environments exposed to moisture or chemicals, extending service life and reducing maintenance requirements. These fully threaded screws ensure maximum thread engagement throughout the fastened materials, making them ideal for applications requiring uniform clamping force and superior pull-out resistance.

Specification Summary & Compliance

This 5/16"-18 x 3/4" flat head screw features precise Class 2A thread fit with UNC coarse thread spacing and right-hand threading direction. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while meeting international quality standards.