Twin-Lock® DOUBLE SECURITY

HOW IT WORKS

 

To ensure the integrity of fastener thread systems, the Twin-Lock® security system works by using tension rather than friction, which has been the basis for most traditional fastening methods. This ensures the securing of threaded systems. Twin-Lock® security system consists of two identical flat washers which have a set of cams on one side and a radial knurling on the other side.

principio_funzionamento

The angle of inclination a of the washer cam is bigger than the pitch ß of the screw thread. When the fastener is tightened, the knurled surfaces grip both the bearing surface of the fastener and the material into which the screw is being fastened. The larger angle of the cam a, compared to the smaller angle of the screw thread ß, will not allow the screw to loosen because of the tension caused by the cam lifting.

Video


Twin-Lock®

Product working principle

Twin-Lock AB 
S:t Johannesgatan 1D
211 46 Malmö, Sweden
Phone: +46 10-146 10 90
info@twin-lock.com
Twin-Lock China
中国上海市江宁路1158号1604A
邮编 200060
Phone: +86 (21) 5269 0136
info-cn@twin-lock.com