These speed nuts are made of stamped spring steel and are meant for spaces with minimal clearance. The design is for a quick application and removal making the nuts reusable. They act as both a lock washer and nut so can generally eliminate the need for lock washers and can be used with either sheet metal or machine screws.
A. Speed clips/SpeedNuts Specifications
DIN 34818,JIS B1216,Q 397,QT 608,QT885 or customized sizes as per your need.
M2.9-M6.3 (Length:16mm-28mm) or as per customers technical drawings showed.