Micron Instrument Co. Supplies Disk Type Couplings. Micron Instrument Co. Manufactures Disk Type Couplings, Spiral Couplings, Encoder Couplings, FCM, Dial Gauge Calibrators, Monochromatic Light, Dial Stand, and Floating Carriage Micrometers used in engineering industries. The Disk Type Couplings have a set of Steel disks. Disks and hubs are precision riveted with spacers making it one piece. Disk type couplings are available in three models, Light duty, Medium duty and Heavy duty. In this coupling there is a change is in disk, i.E. In place of single disk these have multiple disk depending on the torque rating. In case the actual torque requirement is more then in case of nut & blot assembly additional disks can be added to suit torque. These disk type couplings can be supplied in steel hubs and Aluminum hubs with AS or AF clamping, with or without keyway, as per customer`s need.