S-90271A583 5/16"-18 x 1" ASME B18.6.3 Steel Truss Head Slotted Screws
Steel Truss Head Slotted 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
- Enhanced corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Superior load distribution from the wide truss head design, reducing surface pressure and material damage
- High-strength performance with 60,000 psi tensile strength and Rockwell B69 hardness for heavy-duty applications
- Reliable fastening engagement through fully threaded UNC coarse spacing and Class 2A thread fit
- Broad compatibility with standard slotted drive tools for easy installation and maintenance
- Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for industrial use
- Optimized installation efficiency with right-hand thread direction and rounded head profile
Professional Applications & Engineering Value
These zinc-plated steel rounded truss head screws deliver exceptional engineering value in industrial settings where vibration resistance and long-term reliability are critical. The wide truss head design provides superior clamping force distribution, preventing surface damage on softer materials while maintaining secure fastening under dynamic loads. With fully threaded UNC coarse spacing and Class 2A thread fit, these screws ensure rapid installation and consistent performance in assembly lines, machinery, and structural applications. The combination of 60,000 psi tensile strength and Rockwell B69 hardness makes them ideal for heavy-duty fastening requirements in manufacturing, construction, and equipment maintenance, where failure prevention and regulatory compliance are paramount considerations.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread spacing (5/16"-18 thread size). Full compliance with ASME B18.6.3 manufacturing specifications, RoHS 3 (2015/863/EU) environmental directives, and REACH (EC 1907/2006) chemical safety regulations. The 1" length and 0.698" head diameter provide standardized dimensions for consistent performance across industrial applications.
