Strong Holding Power
Deep coarse threads provide excellent pull-out resistance, ensuring a secure connection in chipboard, MDF, plywood, and solid wood.

DIN 7505 C is the specification code for a semi-countersunk Phillips-head particleboard screw under the German national standard. As part of the DIN 7505 wood screw series, its head design balances aesthetics and clamping force compared to Type A (flat countersunk) and Type B (pan head) screws.
It is primarily used for fastening particleboard, MDF, plywood, solid wood, and other wood-based materials. It typically features a PZ (Pozidriv) cross-recess, which offers better slip resistance than the standard PH cross-recess.


Head Shape (Semi-Countersunk/Streamlined Countersunk): Features a semi-countersunk (oval/raised countersunk head) design. Its base is tapered (allowing it to sink into the wood), but the very top surface features a slight curved protrusion (resembling half a teardrop). This ensures that once installed, the screw is neither completely flush nor as prominent as a pan head, resulting in a highly decorative, streamlined appearance.
Slot Type (Pozi Slot): Most models are equipped with a Pozi (Z-shaped cross slot) to ensure a tight fit and prevent slippage during high-speed operation with power tools.
Threads (Double-Flat Threads/Wide Threads): Some C-type standards incorporate a double-flat head or a special anti-splitting tail transition during manufacturing, making them more durable than standard
Deep coarse threads provide excellent pull-out resistance, ensuring a secure connection in chipboard, MDF, plywood, and solid wood.
Self-tapping design eliminates separate thread cutting, reducing installation time and improving assembly efficiency.
DIN 7505B screws are designed for chipboard, MDF, plywood, softwood, and many hardwood applications.
Pre-drilling is generally not required for softwood; however, it is recommended for hardwood or when installing near the edge of the board to prevent the wood from splitting.
DIN 7505A features a flat countersunk head, while DIN 7505C uses a raised countersunk (oval) head, offering a more decorative finished appearance.
DIN 7505C screws are designed for particleboard, MDF, plywood, OSB, hardwood, softwood, laminated panels, and most engineered wood products.