fina - flex
- firm
- firm adherence
- firm grip
- firm joint
- firm joint caliper
- firm riveting
- firm-and-impervious joint
- firm-wired numerical control
- firmware
- first angle projection
- first annealing
- first approximation
- first bore
- first class lever
- first draft proposal
- first generation copy
- first in, first out priority
- first measuring means
- first operation work
- first oscillation
- first position
- first principles
- first process
- first quality steel
- first stage
- first-article inspection
- first-class conductor
- first-cut simulation
- first-in, first-out principle
- first-line supervision
- first-off
- first-off audit
- first-off checking
- first-off component
- first-off gaging
- first-off inspection
- first-off item
- first-off machine
- first-off machining time
- first-off piece part
