spun - stea
- spun
- spur
- spur gear
- spur gear differential
- spur gear pair
- spur gear reducer
- spur gear rim
- spur gear stage
- spur gear wheel
- spur gearbox
- spur gearing
- spur line
- spur pinion
- spur ring
- spur toothing
- spur track
- spur wheel
- spur wheel section
- sputtering
- square
- square bar steel
- square billet
- square bolt
- square bore wrench
- square box
- square box wrench
- square drive
- square drive insert tool
- square edge
- square file
- square head
- square head bolt
- square head bolt with collar
- square head bolt with flange
- square head bolt with flange and half dog
- square head bolt with short dog point
- square header
- square knot
- square member
- square nut
