M4 (4mm) Wing Nuts – Steel (Pack of 20)
Quantity – 20 Pack of M4 Wing Nuts
Dimensions – M4 (4mm Internal Diameter)
Here is what the dimensions mean…
M – Metric thread
4 – Internal Diameter on the wing nut, in millimetres
Material
Zinc Plated Steel – A Corrosion-Retardant plating provides protection from external elements and extends the life of the metal used to make these 4mm wing nut sets.