Device for use in fastening of cymbals, namely, fastening nuts specially designed for fastening cymbals to a stand or holder; securing device for a musical instrument, namely, nuts specially designed for securing musical instruments to stands or holders; musical instruments; percussion instruments; drumsticks; drums; cymbals; musical instrument accessories, namely, tuning keys, stands, cases, carrying bags, skins for drums, drum keys for tuning drums and cymbal arms