flat - forc
- flat slope
- flat sluice valve
- flat spiral
- flat spiral spring
- flat spot
- flat spring
- flat square file
- flat surface
- flat tapering needle file
- flat tappet
- flat terminator
- flat thread
- flat thread rolling die
- flat thrust journal
- flat tipped ball
- flat tire
- flat tooth
- flat track
- flat track shoe
- flat tubular radiator
- flat tuning
- flat turn
- flat twin engine
- flat two-conductor cable
- flat tyre
- flat tyre radius
- flat underside
- flat V/I-curve source
- flat valve
- flat valving surface
- flat washer
- flat ways
- flat welding
- flat welding position
- flat wire
- flat wire rope
- flat yard
- flat-base rim
- flat-base rim with removable side ring
- flat-bed
