Owfeel Pack of 50pcs M512MM Button Head Hex Socket Cap Screws 304 stainless steel bolts Thread length: 12mm/0.47 inch. Made from stainless Steel 304. Suitable for machinery and industrial fasteners. Metric thread: M5. Owfeel is registered trademarks,has been filed in the Amazon,and only authorized this exclusive shop to sell,if find out follow-sell or counterfeit,it is infringement,we will pursue legal responsibility.