Drop handles, hinges, shafts, and spindles require provision of minimum radial clearances as detailed in the table below, to allow for the thickness of the galvanized coating.

SIZE OF SPINDLE SHAFT          MINIMUM RADIAL CLEARANCE

Up to 10mm diameter                                  1.0mm

10 to 30mm diameter                                   2.0mm

Over 30mm diameter                                   2.5mm