Description
The 5/8"-11 Button Head Cap Screw is a robust, heavy-duty fastener engineered for applications requiring reliable strength and a smooth, low-profile finish. Its rounded button-style head combined with an internal hex drive offers excellent torque control and a clean aesthetic, making it ideal for structural, mechanical, and safety-critical assemblies where both form and function matter.
Specifications
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Thread Size: 5/8"-11 (Unified National Coarse)
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Head Type: Rounded button head with internal hex drive
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Drive Type: Hex socket (Allen)
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Length: Available in standard lengths (typically from 1" to 5")
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Material: Alloy steel, with options in stainless steel, zinc-plated, or black oxide-coated variants
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Finish Options: Black oxide, plain, zinc-plated, or stainless
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Grade: Typically Grade 8 (high-strength alloy steel), or 18-8 / 316 stainless for corrosion resistance
Key Features
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Smooth, Low-Profile Head: The button head design offers a sleek, snag-resistant surface ideal for exposed assemblies or moving equipment.
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Heavy-Duty Strength: The 5/8" diameter and 11 TPI UNC threading provide strong tensile and shear performance in high-load applications.
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Precision Torque Control: The internal hex socket supports controlled installation, minimizing the risk of stripping during high-torque applications.
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Durable Finishes: Stainless steel and coated options enhance longevity in corrosive, marine, or outdoor environments.
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Reliable Thread Fit: UNC threads ensure secure engagement with tapped holes or compatible heavy hex nuts.
Typical Applications
The 5/8"-11 Button Head Cap Screw is ideal for heavy-duty fastening in industries where both strength and a flush finish are required:
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Equipment Enclosures and Steel Frames
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Agricultural and Construction Machinery
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Panel Mounting in Structural Fabrication
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Transportation and Utility Vehicle Assemblies
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Industrial Machine Guards and Covers
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Outdoor Fixtures and Modular Systems (with stainless steel)
