$4.00 USD
High strength stainless steel machine screws attach the BMF/3 onto the Switch Kit plate that is included with every binding. They are tightened with a #3 pozidrive screwdriver (a standard #3 Phillips will work almost as well).
Sold in a pack of four (4) Pozidriv screws. You need one pack of four for each binding. Total of two packs for a complete pair of bindings.