機器
allen
allen screw
assembly
backdrop
black
board
bolt
bolt head
bolts and nuts
carpentry
concept
construction
craft
design
engineering
fabrication
fix
hardware
hex
hexagon
industrial
industry
inox
instrument
iron
key
many
mechanic
metal
metallic
nut
photo
plank
repair
screw
screw shop
screwdriver
screwed
screwing
silver
small
spanner
stainless
steel
thread
tool
wood
work
wrench