Screw Cap for Drive Medical Wheel Chair

thingiverse

Human: Drive Medical's Blue Streak wheelchair and possibly others feature two screws on the back sides of their main wheels. The frame isn't solid enough, so these screws can get stuck in each other's threads when the chair is folded up, making it hard to open again. This simple screw cap fits over the screws and turns onto them (cutting plastic threads) with a 14mm socket. One cap is enough to prevent the problem, but two will keep things balanced.