Metal pins refer to small, pointed pieces made of metal. They are commonly used to fasten or join things together, such as clothing, paper, or materials like wood or plastic. Full definition
Finally, the outer layer of metal pins passes through the hair once again to smooth and separate the conditioned hair. (petbusiness.com)
They consist of an aluminium brake - disc chamber and a cast friction ring, both connected with each other in a floating arrangement via metal pins. (thetorquereport.com)
The normal procedure which called for placing two metal pins into the leg for stability was impossible. (northeastanimalshelter.org)