S-90271A591 5/16"-18 x 2" 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
- Superior corrosion resistance with zinc plating for extended service life in demanding environments
- Exceptional holding power from 60,000 psi tensile strength and Rockwell B69 hardness for reliable fastening
- Enhanced load distribution with wide truss head design that resists pull-through on softer materials
- Quick installation and removal with standard slotted drive compatible with common hand tools
- Optimized thread engagement through full threading and Class 2A fit for consistent performance
- Wide application compatibility with UNC coarse threads that resist loosening under vibration
- Regulatory compliance assurance meeting ASME B18.6.3 standards for quality and dimensional accuracy
Professional Applications & Engineering Value
These zinc-plated steel rounded truss head screws deliver critical performance advantages for industrial assembly applications where vibration resistance and corrosion protection are paramount. The wide truss head design provides significantly larger bearing surface than standard flat heads, distributing clamping force effectively to prevent material damage in sheet metal, electrical enclosures, and machinery panels. The UNC coarse thread configuration ensures rapid installation while maintaining secure fastening in wood, plastic, and soft metals. With full threading along the entire 2" length, these screws offer maximum thread engagement for superior pull-out resistance, making them ideal for heavy-duty fastening applications requiring reliable long-term performance under static and dynamic loads.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit for consistent assembly performance. Complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features 5/16"-18 UNC coarse threads with right-hand direction and fully threaded design for maximum utility across industrial applications.
