Nachi VTP Roll Bottoming Thread Forming Tap, #4-40 Thread Size, H5 Thread Limit

• High Vanadium content for superior wear resistance, and are specially heat-treated for toughness.
• High Speed Steel
• Black oxide surface treatment provides extra lubricity and resistance to galling and pickup.
• Tap geometry designed for optimum cutting performance and close control of tapped hole size.
• Right Hand.
• Flute Shape: Fluteless
• Hardness: 58 to 60 RC
• For internal threading in ductile materials without chips such as aluminum, brass, copper, zinc, die castings, etc.
• Designed with more lobes and lubrication grooves, reducing tapping torque by allowing more coolant to reach critical contact areas.

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