flat - fric
- flat
- flat bottom
- flat bottom rail
- flat bracket
- flat cable
- flat car side wall
- flat car with depressed centre
- flat chair
- flat check valve
- flat coil
- flat console
- flat contact
- flat crown
- flat end
- flat flame burner
- flat grade
- flat headed
- flat pallet
- flat rate
- flat seated tie plates
- flat shunting
- flat slide valve
- flat splice bar
- flat spots
- flat strand rope
- flat switched yard
- flat switching
- flat topped wave form
- flat tuning
- flat wagon
- flat weld
- flat wheel
- flat yard
- flat-bed truck
- flat-belt conveyor
- flat-bottomed car
- flat-bracket transposition
- flat-car side wall
- flat-compounded
- flat-end plate
