SPAX yleisruuvit T20 puolipyöreä kanta BLAX 4 mm x 40 mm 200 kpl 0201040400403

Carpenters and cabinet makers reach for these SPAX universal screws when they need a reliable fastener for wood, chipboard, MDF, plastics, or thin metal sheets. The half-round head sits low and clean, while the T-STAR plus T20 drive prevents slipping and delivers full torque without cam-out.

Key specifications

• Nominal diameter: 4 mm
• Length: 40 mm
• Head type: Half-round head (pan head)
• Drive: T-STAR plus T20
• Coating: BLAX black finish
• Material: Hardened steel
• Thread: SPAX wave profile, self-tapping
• Tip: SPAX 4CUT
• Pack quantity: 200 pieces

Why choose it

The BLAX coating provides high corrosion resistance without chromium(VI), making these screws suitable for indoor applications where a black aesthetic is desired. The wave profile thread reduces splitting and increases holding power, while the 4CUT tip allows screwing without pre-drilling in many materials.

Ideal use cases

• Furniture assembly and cabinetry
• Fixing hardware to wood or wood-based panels
• Plastic components and thin metal sheets
• General-purpose fastening where a low-profile black head is preferred

Good to know

These screws are compliant with European Technical Approval (ETA) standards. The T-STAR plus drive system ensures a secure bit fit and optimal power transmission, reducing wear on both bit and screw.