M6 metric (6mm) thread which is found on many modern hi-hat stands.
Gibraltar 5707 Hi Hat Stand
Gibraltar 5707 Hi Hat Cymbal Stand
Gibraltar Quick Release Hi Hat Drop Clutch SC-QRHHDC
Gibraltar Hi-Hat Cymbal Stand Quick Release Clutch SC-QRHHC
Gibraltar Hi-Hat Cymbal Stand Super Clutch SC-4420S
1980's Brand New Old Stock Gibraltar Drum Set Hi-Hat Cymbol Remote Tensioner
