Kieninger Clock Hand Nut Brass Mechanical Grandfather Movement 10 mm 3/8"

1 piece hand nut to fit a Kieninger mechanical grandfather clock movement - a Kieninger grandfather clock movement that winds by pulling the chains or by winding the clock with a key or crank. 10 mm (about 3/8") diameter is the correct size for grandfather clock movements. Correct thread size for all Kieninger movements. Brass.