Files

Files of different types are the principal hand tools used by a fitter. All the files, irrespective of their shape, size and grade essentially consist of two main parts, viz., a toothed blade and a pointed tang which is fitted in a wooden handle. Details of parts of a file are shown in Fig. 2.18. Files are generally forged out of high carbon steel or Tungsten steel followed by cutting of teeth hardening and tempering etc. These files are manufactured in different varieties and their classification is governed by the following factors:

a. Effective length - i.e. excluding the length of tang.,

b. Shape or form of the cross-section.,

c. Depth, spacing and cut of teeth.