A sample from the products for the Heater Unit include: Screw,tap., Screw Wash 4x16, Cable W/v Contl, Nut,flange,8mm.
With a quantity of six pieces, the Screw Tapping 5x12 is the most used part in the HEATER UNIT diagram.
The lowest price component in this Heater Unit parts-list fiche is the Screw Tapping 5x12.