S-91263A546 10-32 x 3/4" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust in harsh industrial environments
• Exceptional tensile strength of 130,000 psi ensures reliable performance under heavy loads and vibration
• Precision Class 3A thread fit provides tighter tolerances for secure fastening in critical applications
• Full threading design offers maximum grip length and uniform stress distribution across the entire fastener
• Rockwell C39 hardness maintains structural integrity and prevents deformation during installation
• Hex drive compatibility with 1/8" drive size enables efficient installation and removal with standard tools
• 82° countersink angle ensures flush mounting and clean aesthetic finish in precision assemblies

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver critical performance advantages in demanding industrial settings where vibration resistance and long-term reliability are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for machinery, equipment frames, and structural components exposed to environmental challenges. The Class 3A thread fit ensures precise engagement in tapped holes, eliminating play and maintaining alignment in precision assemblies. With fine thread spacing and full threading, these screws distribute clamping forces evenly, preventing loosening in high-vibration applications such as automotive assemblies, industrial machinery, and electronic enclosures. The flat head profile with standard 82° angle allows for seamless flush mounting in countersunk holes, making them ideal for applications where surface smoothness and aerodynamic profiles are required.

Specification Summary & Compliance

Manufactured to exacting standards, these screws feature Class 3A thread fit per UNF specifications with 10-32 thread size and right-hand thread direction. The 3/4" length provides optimal fastening depth for medium-duty applications. Compliance with ASTM F835 ensures consistent quality and performance metrics, while RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance confirms environmental responsibility and safety standards adherence for global industrial use.