S-91286A468 3/4"-10 x 3 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength with Grade 8 classification and 150,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc-flake coating, extending service life in harsh industrial environments
• Optimized thread engagement with UNC coarse spacing and Class 2A thread fit ensuring secure fastening and easy installation
• Enhanced durability from Rockwell C33 hardness, maintaining structural integrity under heavy loads and vibration
• Secure external hex drive design allows for high torque application and prevents stripping during installation
• Versatile partial threading provides both gripping strength and clearance where needed in assembly applications
• Industry compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and performance

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where failure is not an option. The zinc-flake coated steel construction provides exceptional corrosion resistance, making it ideal for outdoor equipment, machinery, and structural assemblies exposed to harsh environments. The 3/4"-10 UNC coarse thread with Class 2A fit ensures rapid installation and reliable clamping force, while the partial threading design allows for precise load distribution. With 150,000 psi tensile strength and Rockwell C33 hardness, this fastener maintains integrity under extreme vibration and shock loads, solving common failure points in construction, manufacturing, and heavy equipment applications where standard fasteners prove inadequate.

Specification Summary & Compliance

This 3/4"-10 UNC hex head screw features precise Class 2A thread fit tolerances and partial threading with minimum thread length of 1 3/4". Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring verified material safety and environmental responsibility.