S-91274A189 3/4"-10 x 1 1/2" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-flake coating, ideal for harsh industrial environments
• Superior mechanical strength with 170,000 psi tensile strength for heavy-duty applications
• Precise thread engagement with Class 3A fit ensuring reliable fastening and vibration resistance
• High hardness rating (Rockwell C37) for excellent wear resistance and durability
• Full-threaded design providing maximum grip and load distribution along entire length
• Standard hex drive compatibility with 5/8" drive for easy installation and removal
• Comprehensive compliance with ASME B18.3, ASTM A574, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 3/4"-10 UNC Socket Head Cap Screw delivers exceptional engineering value for demanding industrial applications where reliability is paramount. The zinc-flake-coated alloy steel construction provides superior corrosion resistance compared to standard coatings, making it ideal for machinery, heavy equipment, and outdoor applications exposed to harsh conditions. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of loosening under vibration while maintaining consistent clamping force. With 170,000 psi tensile strength and Rockwell C37 hardness, this fully threaded socket screw withstands extreme mechanical stresses in construction, manufacturing, and automotive assemblies where high-strength fastening solutions are essential for operational safety and longevity.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit and UNC coarse thread specifications. Complies with ASME B18.3 dimensional requirements and ASTM A574 material specifications. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards. Features right-hand thread direction, standard socket head profile, and full threading along the 1-1/2" length for consistent performance across industrial applications.