Chipboard screw VELOX® SIT/TX 3,5x40/25, partial thread, zinc plated

CELO chipboard screw VELOX SIT with Eropean Technical Approval for use in timber construction. With the special underhead milling ribs the screw is optimal suitable for wood because of flush fitting and fewer wood shavings on surface. The SIT recess guarantees a perfect power transfer and a long-lasting SIT bit. Due the conial recess the screw will be centerd (no tumbling) and sticks on the bit, so you get large improved working comfort. Only one bit for four screw diameters is necessary. TX bits can also be used, but without the mentioned advantages. The patented tip thread area for no splitting and reducing installation torque. This is for a flushing screwing and a longer battery life. VELOX SIT is sliding coated for a additional torque reducing.