The provisions of this British Standard relate to the material and dimensions of the types of railway track spanner known by the following names:—
Spanners for fishbolt nuts.
Spanners for running fishbolt nuts.
Spanners for stretcher bar bolts.
Spanners for chair bolts.
Spanners for crossing bolts.
Box spanners for tee-head bolts.
Box spanners for chair bolts.
Box spanners for chair screws (self-cleaning type).