Knuckle thread

Knuckle threads have very wide rounded crests and roots. These DIN knuckle threads also use a steep thread angle.

Knuckle threads or round threads[1] are an unusual highly rounded thread form. The large space between the rounded crests and roots provides space for debris to be shifted to not interfere with the thread, making this form resistant to debris and thread damage.[2]

  1. ^ Knuckle Threads | Round Threads | Leadscrews | Bornemann.de
  2. ^ Bornemann Gewindetechnik GmbH. "Knuckle threads". Retrieved 2014-01-13.