S-91583A634 1"-8 x 6 1/2" 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 structural integrity with Grade A325 certification and 120,000 psi tensile strength for reliable performance in demanding applications.
- Superior corrosion resistance due to hot-dipped galvanized steel construction, extending service life in harsh environments.
- Optimized for high-load applications featuring a Rockwell C19 hardness and coarse 1"-8 UNC thread for secure, vibration-resistant connections.
- Efficient installation and removal with an external hex drive and 1 5/8" head width, allowing for standard wrench access.
- Precise thread engagement with Class 2A fit and partial threading, ensuring accurate alignment and reduced risk of cross-threading.
- Comprehensive compliance with ASME B18.2.6, ASTM A325, and ASTM F3125 standards, guaranteeing consistent quality and reliability.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict regulatory requirements.
Professional Applications & Engineering Value
Engineered for structural steel connections, bridge construction, and heavy machinery assembly, this Grade A325 hex head screw addresses critical challenges like joint slippage and fatigue failure. The hot-dipped galvanized steel material provides a robust barrier against rust and chemical exposure, ideal for outdoor or corrosive settings. With a coarse UNC thread and partial threading design, it ensures rapid installation and superior clamp force distribution, minimizing the need for frequent maintenance. Its 120,000 psi tensile strength and Rockwell C19 hardness make it a dependable choice for high-strength fastening in construction and industrial projects, reducing downtime and enhancing safety.
Specification Summary & Compliance
This fastener adheres to precise dimensional tolerances, including a Class 2A thread fit and 1"-8 UNC coarse thread specifications. It conforms to ASME B18.2.6, ASTM A325, and ASTM F3125 manufacturing standards, ensuring consistent performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe usage.
