Taps are used to cut screw threads in pre determined bores and come in a large range of sizes and thread profiles. Depending upon the usage the threading taps are divided into three categories:
Determine the bore size required for the desired thread using a tap-drill size chart. The length of the bore should be slightly greater than the required length of the thread.
Once the bore is drilled, grip the tap's square shank between the jaws of the Adjustable tap wrench. For components with confined spaces inaccessible to an adjustable wrench, T-tap wrenches can be used. Make sure that the hole is properly lubricated before beginning the operation.
Align the axis of the tap with that of the bore before it enters into the material. Misaligned taps call for excessive force and not only tampers the component but can also break the tap itself. Once everything is in order rotate the tap into the bore. It is a good practice to rotate the tap a quarter turn back after every half a turn into the material. This prevents the tap from clogging in the bore by breaking and removing the chips thus ensuring cleaner threads and longer tap life.
|C.No||Nominal Size (inch)||action|
|C.No||Nominal Size (mm)||Pitch (mm)||action|
An adjustable tap & reamer wrench is used to clamp square shanked tools. Long spindles and heavy build provide higher support when working with larger tools.
Used for holding taps for threading pre-drilled bores in confined spaces. Slim design and sliding T-bar provides easier access and higher maneuverability
Used for manually threading a drilled bore at one machine location without moving the workpiece