The hands of clocks turn in a circle thanks to the clock mechanism, whether battery operated or spring driven on clocks that need winding. Clock hands need replacement when they are rusting and do not turn well due to a face cover that is not airtight.
Place a wall, cuckoo or mantel clock face up on a table. Leave a grandfather clock or large floor model clock in position.
Grasp the face cover clasp in one hand while holding the clock body with the other hand. Pull the clasp out toward the front of the clock to release it. The clasp is generally on the right hand side of the glass covering a clock face.
Swing the glass to the opposite side of the clock from the clasp. The glass door will move on a hinge or hinges generally to the left of the clock face.
Place a pair of needle nose pliers on the nut in the center of the clock. Turn the nut counterclockwise to loosen. Pull the nut straight off and set it aside.
Grasp the minute hand close to the center with a thumb and forefinger on each side of the hand. Gently pull the hand straight out and off the clock.
Remove the hour hand in the same manner as the minute hand.
Hold the new hour hand between a thumb and forefinger while holding the pointer end in the other hand. Place the new hour hand over the small bolt in the center of the clock.
Place the minute hand on the clock face in the same manner as the hour hand.
Replace the nut on the center of the hands and tighten it in a clockwise direction.
Reset the correct time by turning the minute hand manually.
Close the glass clock door covering the face. An audible click will sound when the glass door closes and locks in place.