S-93516A119 1/4"-20 x 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 for extended service life in marine and harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and stress
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
- Fully threaded UNC coarse design enables faster installation and superior holding power
- External hex drive configuration allows for easy installation with standard tools and high torque application
- Class 2A thread fit ensures precise, consistent engagement while accommodating minor variations
- Comprehensive regulatory compliance meets ASME B18.2.1, RoHS 3, and REACH standards for quality assurance
Professional Applications & Engineering Value
Our 651 Silicon Bronze hex head screws deliver exceptional performance where corrosion resistance is critical. The silicon bronze composition provides natural resistance to saltwater corrosion, making these marine grade fasteners ideal for shipbuilding, offshore platforms, and coastal infrastructure. The 1/4"-20 UNC coarse thread design ensures rapid installation and reliable clamping force in demanding applications. With 70,000 psi tensile strength and Rockwell B70 hardness, these screws maintain structural integrity in high-vibration environments while the external hex drive accommodates high-torque installation without stripping. These industrial bronze fasteners solve critical challenges in chemical processing, water treatment, and marine engineering where standard steel fasteners would rapidly deteriorate.
Specification Summary & Compliance
This 1/4"-20 x 4" hex head screw features Class 2A thread fit per UNC standards, ensuring proper clearance for reliable assembly. Manufactured to ASME B18.2.1 specifications for dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental and safety regulations for industrial applications worldwide. The fully threaded design with right-hand coarse threading provides consistent engagement across the entire fastener length.
