S-90175A130 3/4"-10 x 2 1/4" ASTM A490, ASTM F3125 High-Strength Steel Heavy Hex Head Screws for Structural Applications

Key Features & Benefits at a Glance

• Exceptional structural integrity with 150,000 psi tensile strength for reliable performance in demanding applications
• Superior wear resistance due to Rockwell C38 hardness, ensuring long service life under heavy loads
• Optimized load distribution through partial threading design that maximizes grip length efficiency
• Easy installation and removal with standard external hex drive and 1 1/4" head width for common tool compatibility
• Secure fastening in coarse materials thanks to 3/4"-10 UNC coarse threads that resist vibration loosening
• Precision manufacturing with Class 2A thread fit ensuring consistent performance and proper engagement
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe industrial use

Professional Applications & Engineering Value

This high-strength hex head screw delivers critical engineering solutions for structural applications where failure is not an option. The ASTM A490 Grade steel composition provides exceptional resistance to dynamic loading and seismic forces, making it ideal for construction projects, heavy machinery assembly, and infrastructure development. The 3/4"-10 UNC coarse thread configuration ensures rapid installation in steel frameworks while maintaining vibration resistance. With partial threading optimizing the relationship between thread engagement and shank strength, this fastener prevents joint slippage in critical connections. The external hex drive design accommodates standard industrial tools, streamlining installation in confined spaces common in structural steel work and heavy equipment manufacturing.

Specification Summary & Compliance

This hex head screw features precision Class 2A thread fit with 3/4"-10 UNC coarse threads and complies with ASTM A490 specifications where identified in ASTM F3125. The fastener maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for industrial applications worldwide. Manufacturing adheres to strict dimensional tolerances with 2 1/4" length, 7/8" grip length, and 1 3/8" thread length for consistent performance across production batches.