Combi-Screws are made of heat treated alloy steel. Lakshman Tools Pvt. Ltd. Is the manufacturer of Combi-Screws. Lakshman Tools Pvt. Ltd., an ISO 9001:2000 certified company manufactures high tensile steel fasteners suitable for applications in all types of industries and automobile companies. The fastener products are sold under the brand name of " RHINO" .Combi-Screws have Strength Designation Class/Grade of 12.9. These screws find application in engine assemblies, framework, parts subjected to vibration.