S-90175A114 3/4"-10 x 2 1/2" ASTM A490, ASTM F3125 High-Strength Steel Heavy Hex Head Screws for Structural Applications
High-Strength Steel Heavy Hex Head Screws for Structural Applications
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional structural integrity with 150,000 psi tensile strength for reliable performance in the most demanding heavy-duty applications.
- Superior wear and deformation resistance due to Rockwell C38 hardness, ensuring long-term durability and fastener integrity.
- Optimized for high-strength structural connections, meeting the rigorous ASTM A490 / F3125 specification for Grade A490 fasteners.
- Efficient installation and high clamp force with a 1 1/4" external hex head and coarse UNC threads, allowing for quick assembly with standard tools.
- Precise and reliable thread engagement guaranteed by the Class 2A thread fit, reducing the risk of cross-threading and assembly issues.
- Versatile partial threading with a 1 3/8" thread length and 1 1/8" grip length, providing flexibility for a range of material thicknesses.
- Compliant with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global industrial markets.
Professional Applications & Engineering Value
This 3/4"-10 ASTM Grade A490 steel hex head screw is engineered to solve critical challenges in heavy-duty construction and structural steel applications. The high carbon steel composition, combined with the 150,000 psi tensile strength and Rockwell C38 hardness, provides the necessary resilience to withstand extreme vibrational loads, shock, and stress without failing. The coarse UNC thread and external hex drive design enable rapid, high-torque installation in structural steel connections, bridgework, and heavy machinery, significantly reducing assembly time while maintaining a secure, long-lasting hold. Its partially threaded shank concentrates the clamping force precisely where it's needed, preventing joint loosening and ensuring structural stability in critical, high-stress environments.
Specification Summary & Compliance
This fastener features a 3/4"-10 UNC coarse thread with a Class 2A thread fit for consistent and precise engagement. It is manufactured to meet the stringent requirements of ASTM A490 / ASTM F3125 for Grade A490 structural bolts. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.
