S-90058A194 8-32 x 1/2" Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws
Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
- Exceptional load-bearing capacity from 80,000 psi tensile strength, preventing fastener failure under high stress
- Precision thread engagement with Class 3A fit, ensuring reliable connections and reducing assembly issues
- Enhanced drive stability through Tri-Groove design, minimizing cam-out and tool slippage during installation
- Optimized thread performance with UNC coarse threading, enabling faster installation and better debris clearance
- Consistent hardness profile at Rockwell C28, maintaining structural integrity through repeated use cycles
- Full-threaded design providing maximum grip length and uniform stress distribution along the entire fastener
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these zinc-plated steel rounded head screws deliver critical performance advantages in machinery assembly, electrical enclosures, and structural frameworks. The UNC coarse thread configuration combined with Class 3A precision fit eliminates play in vibration-prone environments, while the Tri-Groove drive system ensures consistent torque transmission without stripping. The high-strength steel core with Rockwell C28 hardness maintains dimensional stability under load, preventing deformation in high-torque applications. The zinc plating provides essential corrosion protection for extended service life in manufacturing facilities, outdoor equipment, and automotive applications where environmental exposure is a concern.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit for superior dimensional accuracy and UNC coarse thread specifications. The fastener features a No. 6 Tri-Groove drive system and complies with industry standards for mechanical properties and performance. The zinc-plated steel construction meets corrosion resistance requirements while maintaining 80,000 psi tensile strength and Rockwell C28 hardness for reliable performance in critical applications.
