Screw-M3*8-Black zinc plated hexagon socket countersunk head carbon steel

Introducing the Screw-M3*8 — a precision M3x8 screw designed for clean, flush assemblies. With a hexagon socket drive and a countersunk head, this fastener sits neatly against surfaces while delivering consistent torque and secure grip. The black zinc plating adds a durable, subtle finish and enhances corrosion resistance, making it versatile for metal and plastic applications. Crafted from robust carbon steel, it balances strength and reliability for everyday mechanical mounting.

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  Flush countersunk head: sits level with the surface for a sleek, snag-free finish in electronics enclosures, 3D-printer frames, and compact machinery.


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  Hex socket drive: enables precise torque control and easier installation in tight spaces, even with gloves on.


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  Black zinc plating: provides durable wear resistance and a refined appearance that blends with dark substrates.


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  Carbon steel core: reliable strength for general mounting and assembly tasks without unnecessary bulk.


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  Size and compatibility: M3 thread, 8 mm length; designed for threaded holes or tapped assemblies that accept M3 fasteners.

Ideal applications

• Electronics enclosures, control panels, and mounting brackets requiring a flush surface.


• CNC and 3D-printer builds, framing, and joint connections where a low-profile fastener matters.


• DIY furniture and home projects that benefit from a clean, professional look.


• Small mechanical assemblies in robotics or hobby projects with limited clearance.

Practical installation tips

Use in tapped holes or aligned with a compatible nut-oriented setup. For plastics or softer metals, ensure a proper pilot hole or tapping process to maintain thread integrity and prevent over-tightening. The hex socket drive facilitates steady seating and reduces cam-out in tight corners or recessed panels.

Specifications

• Size: M3 x 8 mm


• Head type: Countersunk (flat) with hex socket


• Material: Carbon steel


• Finish: Black zinc plated


• Drive: Hex Allen


• Application: Through-hole or tapped mounting in metal or plastic components