Subland Step Drill Bit: 3/8, 7-1/8" OAL MPN:371 3/8

Kennametal's subland step drill bit measures at 3/8 diameter with an overall length of 7-1/8, making it suitable for deburring or enlarging existing holes without creating oversized threads or damaging the threaded fastener. Designed to offer outstanding durability and reliability, this tool is ideal for professionals working across industries such as aerospace, automotive or general machining that require precise hole drilling and countersinking in both hardened or softer materials. Additionally, its cutting lips are treated with Titanium Nitride (TiN) coating to enhance the tool life and reduce friction, enabling quicker completion of tasks without compromising accuracy.