Large self-tapping screws

Large self-tapping screws are fasteners with a shank diameter from 6 to 16 mm and a length from 100 to 400 mm. The head is most often hex-shaped or a flange head with a torx recess. The thread may be full-length along the entire shank, or have a smooth section before the head, but always with a wide pitch.

Large self-tapping screws are made from high-strength steel alloys with subsequent corrosion protection. Large fasteners made of austenitic stainless steel deserve particular attention for their high technical performance.

Large self-tapping screws are used mainly in timber construction, as well as in building rafter roofs on structures made of other materials. The power of driving tools is not always sufficient to drive a large self-tapping screw fully into a timber beam or log. For this type of fastener, it is therefore advisable to pre-drill holes with a diameter smaller than the shank size.

FLOK offers large self-tapping screws of various models.