S-91247A736 1/2"-13 x 6" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex Head Screws
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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 tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc plating provides superior corrosion resistance, extending service life in harsh industrial environments and minimizing maintenance needs.
- Grade 5 classification and Rockwell C25 hardness offer excellent durability and wear resistance for repeated use in demanding assemblies.
- Partially threaded UNC coarse design allows for easier alignment and faster installation, saving time on the production line.
- Class 2A thread fit ensures smooth engagement and consistent clamping force, enhancing joint integrity.
- External hex drive and 3/4" head width enable secure tool grip and high torque application, preventing stripping during installation.
- Compliance with ASME B18.2.1, SAE J429, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations for safe, global use.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address common industrial challenges such as vibration loosening and corrosion in heavy machinery, construction, and automotive assemblies. The zinc-plated steel construction combats rust in exposed or humid conditions, while the 1/2"-13 UNC coarse thread provides robust holding power in wood, metal, and composite materials. With a partially threaded shank, it allows for precise unthreaded grip length, reducing stress concentration and improving fatigue resistance. Ideal for structural frameworks and equipment mounting, this fastener delivers consistent performance where high tensile strength and compliance with ASME B18.2.1 are critical for safety and longevity.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 2A fit for standard tolerance and easy assembly. It meets ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use worldwide.
