S-92865A158 5/16"-18 x 1 3/8" 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
- Superior tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Zinc plating provides excellent corrosion resistance, extending the service life of the screw in various industrial environments.
- Grade 5 steel construction with Rockwell C25 hardness offers a robust balance of strength and durability for repeated use.
- UNC coarse thread design allows for quicker installation and better performance in materials prone to stripping or vibration.
- Class 2A thread fit ensures consistent, precise engagement with nuts and tapped holes, minimizing assembly issues.
- Partially threaded shank provides enhanced clamping force where needed, improving joint stability in structural applications.
- External hex drive and standard head dimensions facilitate easy installation with common tools, saving time and labor costs.
Professional Applications & Engineering Value
This 5/16"-18 Grade 5 steel hex head screw is engineered to address common challenges in heavy-duty industrial settings, such as machinery assembly, construction, and automotive applications. The zinc plating effectively combats corrosion, making it suitable for environments exposed to moisture or chemicals. With a coarse UNC thread and Class 2A fit, it ensures secure fastening in softer materials or where vibration resistance is critical, reducing maintenance needs. The partially threaded design concentrates clamping force, preventing loosening under dynamic loads. Compliant with ASME B18.2.1 and SAE J429 standards, it delivers consistent quality and reliability for B2B procurement in sectors requiring high-strength fasteners with precise dimensional accuracy.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit and UNC coarse thread standards, ensuring dimensional precision per ASME B18.2.1 and SAE J429 specifications. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental and safety regulations. The product's inch system measurements, including a thread size of 5/16"-18 and length of 1 3/8", are consistently controlled for reliable performance in industrial applications.
