S-92865A891 7/8"-9 x 4 1/2" 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 under heavy loads, reducing the risk of fastener failure in demanding applications.
- Superior corrosion resistance from the zinc plating protects against rust and environmental damage, extending the service life of your assemblies.
- Robust Rockwell C25 hardness provides excellent durability and wear resistance, maintaining fastener integrity through repeated use and vibration.
- Coarse UNC thread design offers faster installation and superior holding power in a wide range of materials, improving assembly efficiency.
- Class 2A thread fit ensures consistent, reliable engagement with standard nuts and tapped holes, facilitating smooth installation and reducing cross-threading risks.
- External hex drive and hex head design allows for high torque application with common tools, enabling secure fastening in tight spaces.
- Full threading along the 4 1/2" length provides maximum grip and adjustability across the entire fastener, offering versatile fastening solutions.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address critical challenges in industrial fastening, where high tensile strength and durability are paramount. The zinc plated steel construction combats corrosion in harsh environments, while the 7/8"-9 UNC coarse thread ensures rapid installation and robust holding power in structural applications, machinery assembly, and heavy equipment. Its fully threaded design and external hex drive provide consistent clamping force and ease of use with standard wrenches, making it ideal for applications requiring reliable, high-strength fastening solutions that minimize maintenance and downtime.
Specification Summary & Compliance
This screw features a Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy and compatibility. It is manufactured to meet ASME B18.2.1 and SAE J429 Grade 5 specifications, guaranteeing consistent quality and performance. Additionally, the product is RoHS 3 (2015/863/EU) Compliant, adhering to environmental regulations for safe use in various industrial sectors.
