Thread Pitch: 1.25mm; Flange Diameter: 18mm（0.71 "）.
Main Color: Silver Tone.
Material Description: Corrosion Resistant A2-70 Stainless Steel.
Packing Box : plastic
Easy to use and store.
Type: Serrated Flange Metric Hex Lock Nuts
A flange nut is a nut that has a wide flange at one end that acts as an integrated, non-spinning washer. These nuts have serrations on the integrated washer giving it a "locking" characteristic. This serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface.
Size and Quantity:
M8 Nuts: 30pcs