100 Pcs Stainless Steel 2.5mm x 16mm Dowel Pins Fasten Elements V5S9

Dowel pins are solid metal cylindrical fasteners that are used in a wide range of applications. Also known as parallel pins, dowel pins are used to retain parts in a fixed position, maintain alignment between different parts, or to join different components together.

Can be used for stencil base panel.  Have a look at this design.

You can buy it here.