... technologies for a reliable hold threaded insert The B-Lok is a threaded insert with dif- ferent external profiles, which guaran- tee optimum anchorage in all types of moulded plastic components Product features • Unbeatably short installation times • Screw is secured automatically against loosening • Cost savings for locking elements Registered Trademark *) protected by numerous national Selection of the correct B-Lok type: ponent and receiving hole The part requiring fastening should be flush with the threaded insert, see (1). For this reason, the borehole (2) should be closely dimensioned and not countersunk.The B-Lok press in flush into the formed part (1). The screw length must be selected so that the B-Lok is completely expan- Hole diameter and wall thicknesses are dependent on the material used for the formed part. Please enquire or ascertain by testing. For guideline values, see the Works Standard sheets. For B-Lok, we recommend the smallest possible hole diameter in which it is still possible to reliably insert the screw. Although a larger hole means that the screw is less stiff running, at the same time reduces pull-out resi- stance and torque safety. Hole depth. This should be overdi- mensioned if possible. The screw must not under any circumstances come to rest at the bottom of the hole, see (3). 1. The B-Lok is pressed into the receiving hole, during which process the segments bend inwards. 2. When inserting the screw, the seg- ments resume their original shape, in which process the external profile becomes anchored in the hole wall. The residual tension acts to lock the In the case of small-scale series, the B-Lok is embedded with a simple manual levering device (possibly a small press or drill at a standstill). For large series: Single or multiple installation machines on request. We recommend practical testing. All table values apply only if the screw is inserted to at least 50% of its length in the threaded insert.