SPAX Universal Screws T20 Countersunk Head BLAX 5 mm x 80 mm 100 Pieces 0191040500803

For carpenters, joiners and serious DIYers working with wood, chipboard or MDF, these SPAX universal screws deliver a flush, secure fit with a professional black finish. The 5 mm diameter and 80 mm length provide strong holding power in structural timber framing, furniture assembly and outdoor wood projects.

Key specifications

• Screw type: Universal screw
• Head type: Countersunk head
• Drive type: Torx
• Drive size: T20
• Screw diameter: 5 mm
• Screw length: 80 mm
• Material: Hardened steel
• Coating/finish: BLAX (black finish)
• Point type: 4CUT point
• Thread profile: SPAX wave profile
• Head feature: MULTI-head for flush countersinking
• Suitable for materials: Wood, chipboard, MDF, plastics, thin metal sheets
• Pack quantity: 100 pieces
• Colour: Black
• Thread type: Partial thread

Why choose it

The BLAX coating provides corrosion resistance, making these screws suitable for both indoor and outdoor applications. The 4CUT point reduces splitting and allows screwing without pre-drilling in many materials, while the wave profile ensures a tight, vibration-resistant fit.

Ideal use cases

• Timber framing and structural connections
• Furniture assembly and cabinet making
• Fixing fittings and brackets to wood
• Outdoor wood constructions such as pergolas or decking

Good to know

The T20 Torx drive provides better bit engagement and reduces cam-out compared to Phillips or Pozidriv, especially when using an impact driver. The countersunk head sits flush or slightly below the surface for a clean finish.