1. Thumb Screw & Nuts ( Thread Size: M2 x 10mm (Length) ) Qty request: 200pcs each The hole on the metal tube is 2.2mm diameter. Therefore, the thumb screw should be less than 2.2mm diameter. Please provide quotation as below attached picture. The length of the screw should be 12mm. Kindly propose your brand, part number and send me your best offer price as well as lead time of delivery. Please provide product catalogue/datasheet for reference.