S-91309A814 5/8"-11 x 5" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength 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 60,000 PSI ensures reliable performance in heavy-duty applications and prevents fastener failure under high stress.
- Superior corrosion resistance from zinc plating protects the screw in harsh industrial environments, extending service life and reducing maintenance needs.
- Precise Class 2A thread fit guarantees easy assembly and a secure hold, minimizing the risk of cross-threading and improving installation efficiency.
- Robust Rockwell B69 hardness provides excellent durability and resistance to wear, making it suitable for high-vibration and repetitive load scenarios.
- Coarse UNC thread design allows for quick installation and strong gripping power in a variety of materials, from metal to wood.
- Full threading along the 5-inch length offers maximum adjustability and clamping force, ideal for applications requiring deep penetration.
- Compliance with ASME B18.2.1 and ASTM A307 standards ensures consistent quality, dimensional accuracy, and interoperability with other standardized components.
Professional Applications & Engineering Value
This 5/8"-11 UNC hex head screw is engineered from steel with a zinc-plated finish to address common industrial challenges such as corrosion and structural integrity. Its coarse thread and external hex drive facilitate rapid installation in heavy machinery, construction frameworks, and transportation equipment, where vibration resistance and high tensile strength are critical. The fully threaded design ensures uniform stress distribution, reducing the risk of loosening in dynamic loads. By meeting ASME B18.2.1 and ASTM A307 specifications, it provides reliable performance in structural bolting, bridge construction, and industrial assembly, ensuring long-term safety and reducing downtime.
Specification Summary & Compliance
This screw features a 5/8"-11 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy as per ASME B18.2.1. It is manufactured in compliance with ASTM A307 for mechanical properties and is RoHS 3 (2015/863/EU) Compliant, ensuring environmental safety and regulatory adherence.
