--- title: Case Study - H&C Tool Supply description: "The customer was tapping a \"blind hole\" in 17-4PH stainless steel and felt they were not getting apporiate productivity and tool life. They were using a high speed steel \"OSG\" 10-32 2B tap with an oxide coated surface." --- [![](https://www.hctoolsupply.com/hs-fs/hubfs/H%26Ctoolsupply%20horz.jpg?width=1362&height=185&name=H%26Ctoolsupply%20horz.jpg)](https://www.hctoolsupply.com) [Certifications](https://www.hctoolsupply.com/certifications) | [Hewes Fastener Division ](http://www.hewesfastener.com/)|[ Blog](https://www.hctoolsupply.com/blog) # Case Study ### Kennametal Tap Test ### The Client: A local contract manufacturer. ### The Challenge: The customer was tapping a "blind hole" in 17-4PH stainless steel and felt they were not getting appropriate productivity and tool life. They were using a high speed steel "OSG" 10-32 2B tap with an oxide coated surface. ### The Solution H&C Tool Supply recommended they test a Kennametal [tap](https://www.hctoolsupply.com/products/categories/taps-dies) with a chromium carbide carbon (CRCC) coating. Kennametal technicians came to their facility and ran a test. ### The Benefit: The customer was very pleased with the results of the test: - Speeds and feeds were more than doubled - Tapping cycle was reduced from 1.06 minutes to 0.443 minutes - Tap life increased from 164 holes per tap to 1000 per tap - Tap usage per year on this job went from 25 taps to 4 taps  - Cost per piece went from $1.73 to $0.66 - There were 24 hours of machine time freed per year as well  The cost of the "OSG" tap was $15.86 per tap. The Kennametal tap cost was $36.92 per tap. The increased production and increased tool life, more than offset initial tooling cost. ![Tapping 3](https://www.hctoolsupply.com/hs-fs/hubfs/HC_Tool_Supply_December2018%20Theme/Images/tapping_3_495x225.jpg?width=429&name=tapping_3_495x225.jpg)  ![Tapping 2](https://www.hctoolsupply.com/hs-fs/hubfs/HC_Tool_Supply_December2018%20Theme/Images/tapping_2_498x260.jpg?width=420&name=tapping_2_498x260.jpg) ![Tapping 1](https://www.hctoolsupply.com/hs-fs/hubfs/HC_Tool_Supply_December2018%20Theme/Images/tapping_1_500x148.jpg?width=415&name=tapping_1_500x148.jpg) ## Contact Us **H&C Headquarters **235 Mt. Read Blvd. P.O. Box 11330 Rochester NY 14611 585-235-5700 | info@hctoolsupply.com **H&C Pennsylvania**  9 Eastway Ave. Greenville, PA 16125 724-588-5111   ![](https://secure.7-companycompany.com/795277.png)