S-91583A613 5/8"-11 x 2 3/4" 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
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term reliability in harsh industrial environments.
- High tensile strength of 120,000 PSI and Rockwell C19 hardness for superior load-bearing capacity in heavy-duty structural applications.
- Precise Class 2A thread fit with UNC coarse threading for easier alignment and reduced risk of cross-threading during installation.
- Optimized load distribution with a 1 1/2" grip length and partial threading, minimizing stress concentration on connected materials.
- Secure external hex drive design allows for high-torque installation using standard tools, speeding up assembly in construction projects.
- Full compliance with industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125, guaranteeing consistent quality and performance.
- Environmental regulation adherence with RoHS 3 and REACH compliance, ensuring safe use in regulated industrial sectors.
Professional Applications & Engineering Value
Engineered for structural bolting and heavy-duty construction, this Grade A325 hex head screw addresses critical challenges in industrial fastening. The hot-dipped galvanized steel construction provides a robust barrier against rust and corrosion, extending service life in outdoor or high-moisture settings such as bridges, steel frameworks, and machinery bases. Its 5/8"-11 UNC coarse thread and partial threading design ensure optimal clamp load distribution, reducing the risk of joint failure under dynamic loads. With a 120,000 PSI tensile strength and external hex drive, it supports efficient installation in high-stress applications, minimizing downtime and maintenance costs for engineers and contractors.
Specification Summary & Compliance
This hex head screw features a 5/8"-11 UNC thread with Class 2A fit for precise dimensional accuracy, a length of 2 3/4", and a 1 1/2" grip length. It conforms to ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring adherence to rigorous manufacturing standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible procurement in industrial operations.
