accessory
alloy
aluminium
bolt
chrome
closeup
constrution
craft
design
device
engineering
equipment
external screw
factory
fix
gear
hand
housework
houshold
industry
inplements
insulated
iron
key
male screw
master
mechanic
mechanical
metal
nut
object
plumber
profession
professional
repair
restoration
sanitary engineering
screw
silver
spanner
stainless
steel
technology
tool
vanadium
white
work
worker
wrench