Wing Butterfly Nuts M3 M4 M5 M6 M8-M12 Bright Zinc Plated Wingnuts Metric DIN315

A threaded nut designed to be used with an equivalent threaded rod / bolt / machine screw. Unlike other nuts these are designed to be tightened by hand rather than with tools. Sometimes known as “Butterfly” nuts. Refers to the size of the internal hole. Measured from the minor diameter of the internal thread (thread