S-90271A581 5/16"-18 x 3/4" 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-plated steel construction for extended service life in harsh industrial environments
- Enhanced load distribution through wide truss head design that reduces surface pressure and prevents material damage
- Reliable fastening performance with Class 2A thread fit ensuring consistent engagement and vibration resistance
- High tensile strength rating of 60,000 psi provides exceptional structural integrity for demanding applications
- Optimized installation efficiency with coarse UNC threads enabling faster assembly and reduced cross-threading risks
- Full-threaded design delivers maximum grip length and holding power across the entire fastener length
- Industry-standard compliance meeting ASME B18.6.3 specifications for guaranteed dimensional accuracy and performance
Professional Applications & Engineering Value
These zinc-plated steel truss head screws address critical industrial fastening challenges where both corrosion protection and high clamping force are essential. The wide truss head profile significantly increases bearing surface area, making them ideal for sheet metal assemblies, electrical enclosures, and machinery guards where traditional fasteners might pull through thinner materials. The coarse UNC thread configuration combined with Class 2A tolerance ensures rapid installation in production environments while maintaining reliable thread engagement. With 60,000 psi tensile strength and Rockwell B69 hardness, these fully threaded screws provide exceptional resistance to loosening under vibration and thermal cycling, making them suitable for automotive, construction, and heavy equipment applications where joint integrity is paramount.
Specification Summary & Compliance
This 5/16"-18 x 3/4" truss head slotted screw features precision UNC coarse threads with Class 2A thread fit for consistent dimensional accuracy. Manufactured to ASME B18.6.3 standards, the fastener ensures reliable performance in industrial applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and workplace safety standards.
