S-93516A139 5/16"-24 x 1 1/2" ASME B18.2.1 Bronze Hex Head Screws
Bronze 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 corrosion resistance for extended service life in marine and harsh industrial environments, thanks to 651 Silicon Bronze construction.
- Exceptional tensile strength of 70,000 psi ensures reliable performance under high-stress conditions, preventing fastener failure.
- High Rockwell B70 hardness provides excellent wear resistance and durability for long-term, heavy-duty applications.
- Fully threaded UNF fine thread design delivers maximum grip and superior holding power in a wide range of materials.
- Precise Class 2A thread fit guarantees consistent, easy installation and a secure, vibration-resistant connection.
- Standard-compliant external hex head allows for high-torque installation with common tools, simplifying assembly and maintenance.
- Compliance with major industry and environmental regulations including ASME B18.2.1, RoHS 3, and REACH, ensuring safety and global acceptance.
Professional Applications & Engineering Value
Engineered for demanding applications, this 651 Silicon Bronze hex head screw is the ideal solution for industries where corrosion is a primary concern, such as marine hardware, chemical processing, and coastal construction. The combination of high-strength bronze material and a fully threaded UNF fine thread pattern directly addresses the need for durable, long-lasting fasteners that resist degradation from saltwater, chemicals, and atmospheric exposure. Its 70,000 psi tensile strength and Rockwell B70 hardness ensure it can withstand significant mechanical loads and abrasion, reducing maintenance frequency and replacement costs. The external hex drive and Class 2A thread fit facilitate quick and reliable installation, making it a trusted component for critical assemblies in harsh environments.
Specification Summary & Compliance
This screw features a 5/16"-24 UNF fine thread with a Class 2A thread fit for consistent dimensional accuracy and assembly. It is manufactured in compliance with the ASME B18.2.1 standard for hex head screws. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.
