GUH 9019790028450 #4 Cobalt Machine Tap 40 TPI Nitride

• Modified bottoming chamfers are similar to bottoming chamfers, but they are longer and have more teeth. They are used for threading blind holes and can be found with ranges between 2 to 2-1/2 threads. Some modified bottoming chamfers are 2-1/2 to 3 threads
• Oxide, also known as black oxide or steam oxide, is a surface treatment that prevents chip building, galling and welding on the workpiece. It is commonly used on low carbons, stainless steel and ferrous metals
• Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.

Guhring 9019790028450 | UNC | 3 Flute | 2B | Nitride | Spiral Point Tap