S-92865A440 5/8"-18 x 3" 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.
- Superior corrosion resistance from zinc plating extends service life, even in challenging industrial environments.
- Precise Class 2A thread fit with UNF fine threading provides secure, vibration-resistant connections for critical assemblies.
- High hardness rating (Rockwell C25) enhances durability and wear resistance, minimizing deformation under load.
- Full threading along the 3" length offers maximum grip and adjustability across the entire fastener.
- External hex drive design allows for easy installation and high torque application with standard tools.
- Compliance with ASME B18.2.1/SAE J429 standards guarantees consistent quality and interchangeability in professional applications.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 5 steel hex head screws deliver robust performance where reliability is non-negotiable. The 5/8"-18 UNF fine thread configuration ensures superior clamping force and resistance to loosening under dynamic loads, making them ideal for machinery, structural frames, and equipment assembly. The zinc-plated finish provides a critical defense against corrosion, extending service life in environments exposed to moisture or chemicals. With a fully threaded design and external hex drive, these screws offer maximum engagement and straightforward installation, reducing assembly time while maintaining high-strength fastening integrity in demanding engineering projects.
Specification Summary & Compliance
This fastener features a Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and compatibility. Manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, it meets rigorous industry requirements for mechanical properties and design. Additionally, the product is RoHS 3 (2015/863/EU) Compliant, adhering to environmental regulations for hazardous substance restrictions.
