S-90729A113 6-32 x 3/4" Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 316 stainless steel material, ideal for harsh chemical and marine environments
• Superior thread engagement and vibration resistance with Class 3A thread fit precision
• High-strength performance under load with 70,000 psi tensile strength and Rockwell B70 hardness
• Secure flush mounting with 100° countersink angle and undercut flat head design
• Reliable installation torque transfer through 5/64" hex drive and fully threaded shank
• Enhanced durability and chemical resistance from passivated surface treatment
• Compliance with global environmental standards including RoHS 3 and REACH regulations

Professional Applications & Engineering Value

These 316 stainless steel flat head screws deliver critical performance advantages in demanding industrial applications where corrosion resistance and mechanical strength are paramount. The combination of Class 3A thread fit and fully threaded UNC coarse thread design ensures maximum engagement in soft materials and vibration-prone assemblies, while the undercut flat head profile provides true flush seating without protrusion. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making these hex drive screws ideal for chemical processing equipment, marine hardware, food processing machinery, and outdoor industrial applications where exposure to moisture and corrosive agents would compromise ordinary fasteners.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit tolerance and UNC coarse thread spacing. Features include 6-32 thread size, 0.138" thread diameter, 3/4" length, 100° countersink angle, and right-hand thread direction. These screws comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet the latest industrial compliance requirements for hazardous substance restrictions.