Stamped Wing Nuts
Cheap item normally used for toys.

Stamped Wing Nut

Technical data
Inches 		Technical data
Metric
Materials Steel
Threads Metric, UNC
Sizes M 4 - M 5 - M 6; 5/32" - 3/16" - 1/4"; 8-32 - 1/4 - 10-24 - 10-32