Company in the field of high-performance engines is looking for a supplier of special nuts as per the attached images. The nuts will be assembled on 9/10/11/12 mm diameter studs and will be tightened with torques of 75-95-105-120 Nm respectively; The main feature should be that they are manufactured with a highly resistant material, which can be used several times. The surface finish is not binding at the moment; the company would like to examine the different solutions available. The customer also requires stamping the brand or numbers on the base of the nut. Attached is a photo of the m12 nut currently used The requested sizes are not binding but should be similar. For the moment, 1000/10000 pieces are required for each measure. Once the supplier has been identified, regular orders will follow over time. NUT M9 base diameter: 16mm height : 9mm pitch : M 9x 1.25 operating key: polygonal 11 mm NUT M10 base diameter: 18mm height: 10mm operating key: polygonal 12mm pitch : M10x 1.25 NUT M11 base diameter: 19.50 mm height : 12mm pitch: M11 X 1.25 13mm polygonal wrench NUT M12 base diameter: 21mm height:13mm 14mm polygonal wrench