heart nut for 3 4 threads ansi unified screw threads —

Founded heart nut for 3 4 threads ansi unified screw threads models & stl files for printing
TNUT M3 2020
Trigubovich
Wheel Nut Cover
GerryPB
Hex Key Wing Nut
MeisterTek
Tnut M4 2020
3DerJaeger
TNut Stones  customizable
Manfred Morgner