Slow Pull Screw Link Failure

While pull testing a basket hitch configuration, a screw link failed at 28.5 kN (6397 lbs). The screw link gate was not completely closed, the threads deformed, and the screw link plastically. The full pull test is shown here to illustrate the strength of a weakened screw link and webbing anchors.
For additional research and data on climbing and rescue gear and system strength, see the SARRR web page at: sarrr.weebly.com/