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Black M4 countersunk hex screw, 6 mm long, 2.5 mm drive

ModMyMods

ModMyMods M4 x 6mm Hex Countersink Screw Black MOD-0289

SKU CH-H004-7M5N2

M4 countersunk hex screws in black-oxide alloy steel, 6 mm total length with 3 mm thread and 2.5 mm drive

  • TypeScrews
  • MeasurementMetric
  • Head TypeCountersinking
  • DriveHex
  • FinishBlack

Size 6mm

  • Hex drive enables quick, controlled installation
  • Black-oxide alloy steel resists corrosion
  • Countersunk head sits flush with surface
  • Manufactured to DIN standards for reliable fit
  • M4 thread with 6 mm total length

Fasteners for metric hardware builds

These M4 countersink screws use a hex drive to simplify installation and reduce the risk of overwinding. They are produced to DIN standards using black-oxide alloy steel for consistent quality across technical applications. The 6 mm total length and 8 mm head diameter suit flush-mount requirements in custom assemblies.

Thermal impact and assembly safety

The short 3 mm thread length limits penetration depth, helping to protect radiators and other thin-walled components from accidental damage during fastening. Black-oxide finish adds mild corrosion resistance without affecting thermal transfer between joined parts. Hex drive allows controlled torque application with a 2.5 mm key for repeatable results.

Standardised hardware convenience

DIN-compliant dimensions ensure compatibility with existing metric taps and threaded inserts, reducing the need for special tooling. Black colour provides a uniform appearance in visible locations such as reservoir mounts or panel brackets. Supplied as individual fasteners so builders can purchase exactly the quantity required for a given project.

Highlights

  • Hex drive enables quick, controlled installation
  • Black-oxide alloy steel resists corrosion
  • Countersunk head sits flush with surface
  • Manufactured to DIN standards for reliable fit
  • M4 thread with 6 mm total length

Specifications

TypeScrews
MeasurementMetric
Head TypeCountersinking
DriveHex
FinishBlack

Other versions of this model

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Questions about this item

What size hex key fits the 2.5 mm drive on these M4 countersink screws?

Use a 2.5 mm hex key; the drive size is 2.5 mm and matches standard metric hex tools.

Will the black-oxide alloy steel finish need any coating touch-up or replacement over time?

The black-oxide finish is a surface conversion layer; it does not require scheduled re-coating, though heavy abrasion can wear it away.

With only 3 mm of thread engagement, when does the screw start to strip under sustained vibration?

The 3 mm thread length limits holding power; in high-vibration use the threads can strip once clamping force drops below the joint's preload.

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