1. Materials can be alloy steel, cast iron or nodular iron;
2. Nitrogen treatment or carbonized to gain hardness HRC 55-60;
3. Teeth numbers on Hirth couplings are defined as per customer requests;
4. Indexing accuracy can be 1" and repeatability accuracy can be 1" on request;
5. Totally custom made Hirth couplings.
Audited Supplier 
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