You’re much less likely to see a screw-type jack stand, but they do exist. With these types of stands, the support beam is a giant screw in the middle of an upright cylinder.

Screw Lock. This type of jack stand is the least common, and although you can expect the design to be stronger than a ratchet type, it won’t be as strong as a pin-lock stand.

Make sure the jack is stable and in good working order. Examine your jack stands—whether the pawl, pin, or screw type. If any of this equipment is bent, damaged, or appears questionable, don't ...