S-93516A550 1/4"-20 x 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
- High tensile strength of 70,000 psi provides reliable load-bearing capacity and structural integrity
- Rockwell B70 hardness ensures excellent wear resistance and durability under stress
- Fully threaded UNC coarse pattern delivers maximum grip and holding power in various materials
- Class 2A thread fit guarantees consistent, precise installation with standard nuts
- External hex drive design allows for high-torque application with common tools
- Compliance with major standards including ASME B18.2.1 ensures engineering reliability
Professional Applications & Engineering Value
These 651 Silicon Bronze hex head screws are engineered to solve critical challenges in corrosive environments where standard steel fasteners fail. The silicon bronze material provides inherent resistance to saltwater corrosion, making them ideal for marine applications, coastal structures, and chemical processing equipment. The UNC coarse thread pattern ensures rapid installation and superior pull-out resistance in wood, soft metals, and composite materials. With full threading along the entire 2-inch length, these screws distribute clamping force evenly, preventing joint loosening in high-vibration environments. The combination of 70,000 psi tensile strength and Rockwell B70 hardness makes them suitable for structural connections requiring both strength and corrosion protection.
Specification Summary & Compliance
This 1/4"-20 x 2" hex head screw features Class 2A thread fit per UNC standards, ensuring proper clearance with standard mating components. Manufacturing complies with ASME B18.2.1 specifications for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) requirements for chemical safety, making them suitable for regulated industrial applications worldwide.
