Our team is here to assist you anytime. Whether you have a question about a product, need help with your order, or simply want personalized recommendations, we're just a message away. Hassle-Free Returns: Easy returns and exchanges simplify the process. Our team is here to assist you anytime. Whether you have a question about a product, need help with your order, or simply want personalized recommendations, we're just a message away. Hassle-Free Returns: Easy returns and exchanges simplify the process. 1 piece NEW hand nut to fit a mechanical grandfather clock movement - a 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 movements. Black color. Made in Germany. THIS HAND NUT WILL NOT FIT A POWERED CLOCK MOVEMENT.Thanks for looking! ASIN B0CYT7Q6CB Brand Generic Color Black Size Name 3/8 Metal Type Alloy Steel Part Number 652223337626 Thread Size 3/8 Thread Type Unified National Coarse (Unc) Finish Types Plain/Unfinished Grade Rating commercial Manufacturer rustic203 Thread Class Class 2A Thread Style Unified Coarse Thread Fastener Type Hex Material Type Alloy Steel Exterior Finish Black Thread Coverage Unthreaded Number of Pieces 1 Inside Thread Size #8 Compatible Groove Diameter 1E+1 Millimeters