S-91571A344 1"-8 x 8" 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 and durability due to high-quality steel construction and Rockwell C19 hardness, ensuring long service life.
- Efficient installation and removal with an external hex drive and coarse UNC threading, reducing assembly time and labor costs.
- Precise thread engagement with Class 2A thread fit, minimizing the risk of cross-threading and ensuring secure fastening.
- Optimized load distribution through a partially threaded design and 6 1/4" grip length, enhancing joint stability in structural connections.
- Compliance with major industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125, guaranteeing consistency and safety.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, supporting sustainable procurement practices.
Professional Applications & Engineering Value
These Grade A325 hex head screws are engineered to address critical challenges in structural steel connections, such as bridges, buildings, and heavy machinery. The steel material and Rockwell C19 hardness provide exceptional resistance to shear and tensile stresses, preventing joint failure under dynamic loads. Featuring 1"-8 UNC coarse threading and Class 2A thread fit, they ensure quick, accurate installation with standard tools, reducing on-site errors. The partially threaded design concentrates strength where needed, improving fatigue resistance in industrial applications. Compliant with ASME B18.2.6 and ASTM A325, these screws deliver consistent performance, making them ideal for projects requiring certified structural bolts that meet rigorous safety and regulatory demands.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent tolerance and UNC coarse threading (1"-8) to facilitate easy assembly. It conforms to ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring reliability in structural fastening. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.
