Flat Head Chipboard Screw Coarse Thread

Flat head coarse thread chipboard screws are self-tapping fasteners engineered for particle board, MDF, plywood and solid wood. The flat countersunk head sinks completely into the workpiece for a clean, flush surface. Deep coarse threads deliver exceptional pull-out resistance in low-density engineered wood, preventing loosening. Widely used in furniture manufacturing, cabinet assembly, wooden packaging and interior woodworking projects.

Key Features

• Flat Countersunk Head: Fully recesses into wood to achieve flush finish with no protruding head.
• Deep Coarse Thread: Large pitch and deep thread profile create strong holding power in chipboard and composite wood panels.
• #2 Phillips Drive: Secure bit engagement, reduces cam-out, compatible with electric screwdrivers.
• Sharp Tapping Point: No pre-drilling required for most wood panels to improve assembly efficiency.
• Material & Heat Treatment: Hardened C1022A carbon steel for high tensile strength.
• Surface Treatment: Blue-white zinc / yellow zinc plating for indoor rust protection; black oxide optional.
• Complete Size Range: Metric sizes M3, M3.5, M4, M4.5, M5; lengths from 12mm up to 100mm.

Applications

• Furniture, cabinet, wardrobe and wooden door assembly
• Fastening chipboard, particle board, MDF, plywood and softwood
• Wooden crate, pallet and interior wood decoration Note: Designed for wood-based panels; not suitable for metal studs.

Technical Specifications

Installation Tips

1. Avoid over-tightening to prevent cracking chipboard and MDF panels.
2. Select proper screw length for thin boards to avoid piercing through the front face.
3. For outdoor and humid environments, choose stainless steel screws for better anti-corrosion performance.