Engineers / Thread Chasers
Chasers are available to chase threaded parts having standard threads. The internal thread chaser has its cutting teeth located on a side face. The external thread chaser has its cutting teeth on the end of the shaft. The handle end of the tool shaft tapers to a point.
Thread chasers are used to rethread damaged external or internal threads.
Select the proper thread chaser for the job. You must know the number of threads per inch on the work. If screw pitch gauges are available, use them to determine the number of threads per inch.
Care of Thread Chasers. Never attempt to sharpen thread chasers yourself. This is a highly specialised cutting process which involves precision work on hard tool steel of a shape altogether not suited for simple stroking on an oilstone. Store chasers carefully when not in use. Coat with a light film of oil and store individually so that the cutting edges do not touch other metal. For long periods of storage, coat chasers with a rust-preventive compound and store in a dry place. |
