S-91263A238 3/4"-10 x 2" ASME B18.3 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 120,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc plating on alloy steel, extending service life in harsh environments
• Precise thread engagement with Class 3A fit and UNC coarse threads ensuring secure, vibration-resistant connections
• Optimized flush mounting through standard 82° countersink angle and flat head design for smooth surface finishes
• High-torque installation capability with 1/2" hex drive allowing efficient assembly with standard tools
• Enhanced durability from Rockwell C32 hardness maintaining thread integrity under repeated stress
• Full-threaded design providing maximum grip length and uniform stress distribution along the entire fastener

Professional Applications & Engineering Value

These 3/4"-10 UNC flat head screws deliver critical engineering solutions where high-strength fastening and flush surface requirements intersect. The zinc-plated alloy steel construction combats corrosion in industrial environments while maintaining 120,000 psi tensile strength for structural applications. The Class 3A thread fit with coarse UNC threading ensures rapid assembly and vibration resistance in heavy machinery, construction frameworks, and transportation equipment. The 82° countersink angle provides seamless integration where aerodynamic or safety considerations prohibit protruding fasteners. The hex drive configuration enables high-torque installation without cam-out issues, making these fully threaded screws ideal for critical joints in manufacturing, infrastructure, and equipment assembly where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit ensuring precision tolerance in inch system applications. The UNC coarse thread (3/4"-10) provides optimal engagement in various materials. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety. Features include right-hand threading, 2" length, and Rockwell C32 hardness for consistent performance across industrial applications.