S-90058A542 1/4"-20 x 1" 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 for extended service life in harsh environments
- Maximum torque transmission through Tri-Groove drive design that minimizes cam-out and tool slippage
- Exceptional load-bearing capacity with 80,000 psi tensile strength for heavy-duty applications
- Precision thread engagement with Class 3A UNC coarse threads ensuring reliable, vibration-resistant connections
- Optimized head design featuring rounded profile for reduced surface damage and improved aesthetics
- Consistent hardness performance at Rockwell C28 for durable, long-lasting fastening solutions
- Full threading coverage along the entire 1" length for maximum grip and holding power
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these zinc-plated steel screws provide exceptional protection against corrosion while maintaining high tensile strength under extreme loads. The Tri-Groove drive system delivers superior torque transfer, eliminating common installation issues like cam-out that can compromise joint integrity. With UNC coarse threading and Class 3A fit, these fasteners ensure precise engagement in various materials, reducing the risk of cross-threading while providing vibration resistance in machinery, equipment assembly, and structural applications. The rounded head design minimizes surface marring while the fully threaded shank maximizes contact area for secure, permanent fastening solutions.
Specification Summary & Compliance
This fastener features precision 1/4"-20 UNC coarse threads with Class 3A fit for superior dimensional accuracy. Manufactured to industry standards with Rockwell C28 hardness and 80,000 psi tensile strength. The zinc-plated steel construction complies with RoHS and REACH environmental standards, while the Tri-Groove drive (No. 10 size) and right-hand threading ensure compatibility with standard industrial tools and applications.
