S-91583A619 3/4"-10 x 5 1/4" ASME B18.2.6, ASTM A325, ASTM F3125 Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
Medium-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 corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term durability in harsh outdoor or industrial environments.
- High tensile strength of 120,000 psi and Grade A325 compliance for reliable performance in critical structural applications.
- Optimized load distribution through partial threading and a 3 7/8" grip length, reducing stress concentration and enhancing joint integrity.
- Easy installation and removal with external hex drive and coarse UNC threads, allowing for quick assembly with standard tools.
- Precise thread fit (Class 2A) ensuring consistent engagement and vibration resistance in dynamic load conditions.
- Compliance with ASME B18.2.6, ASTM A325, and ASTM F3125 standards, guaranteeing interchangeability and engineering reliability.
- Environmental responsibility with RoHS 3 and REACH compliance, meeting strict regulatory requirements for hazardous substances.
Professional Applications & Engineering Value
Engineered for demanding structural connections, these Grade A325 hex head screws deliver superior performance in steel construction, bridge building, and heavy machinery assembly. The hot-dipped galvanized steel material provides a robust barrier against rust and corrosion, extending service life in exposed conditions. With a 120,000 psi tensile strength and Rockwell C19 hardness, they withstand high stress and shock loads without failure. The partial threading design and UNC coarse threads ensure efficient load transfer and resistance to loosening under vibration, making them ideal for structural fastening where safety and durability are paramount. These screws meet rigorous ASME B18.2.6 specifications, offering consistent quality for engineering-critical projects.
Specification Summary & Compliance
This 3/4"-10 hex head screw features precise Class 2A thread fit and UNC coarse threading for reliable engagement. It complies with ASME B18.2.6, ASTM A325, and ASTM F3125 manufacturing standards, ensuring dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming adherence to hazardous substance restrictions.
