61702 Type 33-AG Metric Gold Oxide Straight Flute Hand Bottoming Tap 1-15/16" ID It is equally important that

It is equally important that worms and worm gears used together must have the same diametrical pitch and threads

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When used with Boston Gear worms

This is commonly known as a "red rubber hose

Friction force stops and holds the motor shaft

61702 Type 33-AG Metric Gold Oxide Straight Flute Hand Bottoming Tap 1-15/16" ID It is equally important thatThe most common style of tap Can be used by hand or for tapping under power Versatile taps for use in general machine tapping or CNC tapping applications Use for through hole or blind hole tapping Gold Oxide low temperature stress relief that enhances lubricity, reduces friction and increases tap toughness. Click Here for product catalog Proudly Manufactured in the U. S. A