Coiled pin with flap stop

A pin connection between at least two adjacent rigid members having cylindrical walls defining coaxially aligned holes of the same diameter spanned by a coiled pin, comprising:

• said pin having a body portion within the holes of the rigid members and leading and trailing ends that respectively extend outside the holes beyond the rigid members, and a nominal diameter that is greater than the diameter of said holes such that the body portion is compressed against the cylindrical walls of the rigid members;
• and an outer longitudinal edge that lies on the pin exterior;
• said leading end having a chamfered nose and said outer longitudinal edge having a transverse slit between the rigid member and the nose, thereby forming a flap having a width extending between said slit and said nose, said flap having a free end separated outwardly from the longitudinal edge and thereby forming a leading stop that prevents the pin from being withdrawn from the hole toward the trailing end of the pin;
• and an enlarged portion at the trailing end of the pin outside the rigid member, thereby forming a trailing stop that prevents the pin from being withdrawn from the hole toward the leading end of the pin.