S-91268A841 3/4"-10 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with 150,000 PSI tensile strength for critical structural applications
• Superior durability achieved through Grade 8 steel construction and Rockwell C33 hardness rating
• Easy installation and removal with external hex drive and 1 1/8" head width for standard wrench access
• Reliable coarse thread engagement through UNC threading system for faster assembly in industrial settings
• Precise thread compatibility ensured by Class 2A thread fit for consistent mating with standard nuts
• Full-length threading provides maximum grip strength across the entire 1½" fastener length
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers exceptional performance in demanding industrial environments where failure is not an option. The 150,000 PSI tensile strength and Rockwell C33 hardness provide critical resistance against shear forces and vibration-induced loosening in heavy machinery, structural steel connections, and high-stress equipment assemblies. The 3/4"-10 UNC coarse thread configuration ensures rapid installation while maintaining superior holding power in steel-to-steel applications. The external hex drive with substantial 1⅛" head width accommodates standard industrial wrenches, enabling proper torque application without stripping. Engineered to meet ASME B18.2.1 and SAE J429 specifications, this fully threaded fastener provides consistent performance across construction, manufacturing, and heavy equipment maintenance applications where reliability is paramount.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit per UNC standards with 3/4"-10 coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.2.1 dimensional specifications and SAE J429 Grade 8 mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across international markets. Dimensions include 1½" length, 15/32" head height, and 1⅛" head width in inch system measurements.