Of all the components that make up this F-15 the Screw,tapping,4x12 has the lowest price.
On this parts fiche the Screw,pan,6x14 is the most specified component.
A sample from the products for the F-15 include: Washer,plain 8mm, Seat Assy,single, Spring,lock Key S, Screw,tapping,4x12.