Cross Recessed countersunk head self-tapping -ST4.2x19 carbon steel screws

Meet the Cross Recessed countersunk head self-tapping -ST4.2x19 carbon steel screws — a precise fastening solution built for clean, professional results. The combination of a cross recessed (Phillips) drive, a flush countersunk head, and a self-tapping thread makes these screws ideal for projects where a smooth surface and reliable bite matter.

Key specifications at a glance

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  Drive type: Cross recessed (Phillips) for secure seating and reduced cam-out
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  Head style: Countersunk, designed to sit flush with the material surface
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  Thread design: Self-tapping for fast, on-demand threading in compatible substrates
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  Size: ST4.2x19 (approximately 4.2 mm diameter, 19 mm length)
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  Material: Carbon steel for dependable strength in everyday use

Why this screw stands out

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  Flush finish, minimal visibility: The countersunk head creates a seamless surface, ideal for furniture, cabinetry, and decorative joinery where appearance matters.
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  Fast, controlled installation: The self-tapping design reduces the need for pre-drilled holes in soft woods and many plastics, speeding up workstreams from kitchen installs to DIY projects.
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  Versatile performance: Suitable for softwoods, plywood, certain plastics, and thin metal sheets, making it a practical choice for a range of light-to-medium-duty tasks.
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  Durable yet practical: Carbon steel delivers reliable strength for everyday assemblies, with the option to coat or treat for specific environments if needed.

Ideal use cases

• Furniture assembly and repair (shelves, frames, brackets) where a low-profile fastener matters
• Cabinetmaking and interior trim where a neat, flush finish is desired
• DIY project builds involving softwoods, plywood, or lightweight plastics
• Thin metal or sheet-material applications where a quick, self-tapping join is beneficial

Tips for best results

• For hardwoods or dense materials, use a compatible pilot hole to prevent splitting and guide the screw for a clean entry.
• Tighten with a Phillips bit to the point of seating; avoid over-tightening to maintain thread integrity and prevent material damage.
• Keep fasteners dry and clean to preserve performance; consider coatings or exterior-grade options if your project is exposed to moisture.

Whether you're refining a piece of furniture, installing cabinetry, or completing a lightweight metal or plastic assembly, the Cross Recessed countersunk head self-tapping -ST4.2x19 carbon steel screws deliver a reliable, flush, and professional finish you can trust.