S-93516A125 5/16"-18 x 2 1/4" 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 thanks to 651 Silicon Bronze material, ideal for harsh marine and industrial environments
- Exceptional tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
- Fully threaded UNC coarse design allows for faster installation and superior grip in various materials
- Class 2A thread fit guarantees consistent, precise engagement with standard nuts and tapped holes
- External hex drive and hex head enable easy installation with common tools, reducing assembly time
- Compliance with ASME B18.2.1, RoHS 3, and REACH ensures product reliability and environmental safety
Professional Applications & Engineering Value
Engineered for demanding environments, these 5/16"-18 UNC silicon bronze hex head screws address critical challenges in marine, chemical processing, and outdoor industrial applications. The 651 Silicon Bronze composition offers outstanding resistance to saltwater corrosion and stress corrosion cracking, significantly extending service life in aggressive conditions. With a coarse thread and full threading, they provide rapid installation and maximum holding power in soft materials like wood or composites, reducing the risk of stripping. The external hex drive ensures secure tool engagement, minimizing slippage during high-torque applications. These screws are ideal for securing equipment, structural components, and marine hardware where corrosion resistance and high tensile strength are paramount, delivering long-term reliability and reduced maintenance costs.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and easy assembly. It is manufactured in compliance with ASME B18.2.1 specifications, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting strict environmental and safety regulations for hazardous substances.
