"A hex-edged crank. Its grip is heavily rusted."
The Rusted Crank (named Rust [sic] Hex Crank upon inspection) is a key item in Resident Evil 3: Nemesis.
It must be used to open the shutter at the entrance of the gas station, but must be assisted by the Wrench after the crank's grip breaks off. The message "The shutter is down" can be read upon checking the entrance to the gas station office. There's a hole right to the shutter for the crank, which can read the message "There's a hex-shaped hole." after checking it.
After using the crank and it's broken, the part of the crank can be seen in the hole. It disappears from the inventory as well.
- BIOHAZARD 3 LAST ESCAPE OFFICIAL GUIDEBOOK. Famitsu. 1999.