S-93516A115 1/4"-20 x 2 3/4" 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
- Exceptional corrosion resistance for long-lasting performance in marine and harsh industrial environments
- High tensile strength of 70,000 PSI ensures reliable load-bearing capacity in demanding applications
- Rockwell B70 hardness provides superior durability and resistance to wear and deformation
- Coarse UNC threading with Class 2A fit enables quick installation and secure fastening in various materials
- External hex drive design allows for easy torque application with standard tools
- Full threading along the 2 3/4" length offers maximum grip and adjustment flexibility
- Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality, safety, and environmental standards are met
Professional Applications & Engineering Value
Engineered for marine-grade performance, these 651 Silicon Bronze hex head screws address critical challenges in corrosive environments where standard fasteners fail. The silicon bronze material inherently resists saltwater corrosion, making them ideal for boat building, docks, and coastal infrastructure. Their 70,000 PSI tensile strength and Rockwell B70 hardness provide structural integrity under dynamic loads, while the UNC coarse thread spacing ensures reliable engagement in wood, composite, or soft metals. The external hex drive facilitates efficient installation in tight spaces, reducing assembly time. These screws are particularly valuable in harsh environment applications where durability and regulatory compliance are paramount.
Specification Summary & Compliance
This 1/4"-20 UNC hex head screw features precise Class 2A thread fit per ASME B18.2.1 standards, ensuring consistent dimensional accuracy. The fully threaded design with coarse spacing provides optimal holding power. Manufactured from 651 Silicon Bronze, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety, with verified conformance to specified mechanical properties including tensile strength and hardness.
