Hexagon socket head carbon steel black zinc plated screw assembly M4*8; ES1LD; K014

Engineered for precision projects and compact assemblies, this Hexagon socket head screw brings together robust strength and dependable corrosion resistance in a sleek, low-profile package. The M4×8 screw—crafted from carbon steel and finished with black zinc plating—delivers steady clamping power where space is at a premium, making it a trusted choice for enclosures, small machinery, and DIY builds.

Why this screw stands out

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  Hex socket head for secure torque transfer: The Allen-drive hex socket ensures a clean, flush seating with reduced risk of cam-out, enabling accurate tightening in tight spaces.
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  Solid carbon steel core: Built for reliable shear and tensile strength in everyday mechanical assemblies, even when vibration is a factor.
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  Black zinc plating: Provides a durable finish that resists wear and offers moderate corrosion protection, while presenting a discreet, professional appearance.
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  Compact M4×8 dimensions: Ideal for applications with limited insertion depth or short engagement requirements, without compromising holding power.
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  Model identifiers for easy sourcing: ES1LD and K014 help you locate compatible hardware in your component catalog or project BOM.

Key specifications

• Head type: Hexagon socket head cap screw
• Diameter: M4
• Length: 8 mm
• Material: Carbon steel
• Finish: Black zinc plated
• Drive size: Standard hex Allen key (commonly 2.0 mm)
• Thread: Metric M4
• Models: ES1LD, K014

Ideal use scenarios

• Electronics enclosures and chassis assemblies where a low-profile fastener is required
• Robotics and hobbyist projects that demand reliable, space-conscious mounting
• Small-dimension furniture or cabinetry hardware where neat fastening matters
• Machine assemblies and control panels that experience routine assembly/disassembly

Installation tips and best practices

• Prepare the threaded hole or nut with the appropriate M4 thread engagement to maximize strength and minimize risk of cross-threading.
• Use a calibrated 2.0 mm Allen key to achieve consistent torque and prevent over-tightening, which can strip the head or threads.
• For vibration-prone applications, consider a light threadlocker or periodical re-torque checks as part of maintenance.
• Store alongside other ES1LD and K014 components to ensure compatibility and quick replacement when assembling multiple units.

Care and compatibility

Black zinc plating offers good wear resistance in typical workshop environments and is well-suited for indoor applications. If your project operates in marine or highly corrosive environments, stainless steel equivalents may be preferable. These M4×8 hex socket head screws are designed to mate with standard M4 threads and compatible nuts or tapped holes, delivering dependable, repeatable clamping force across multiple assemblies.