Our other sites:

What immersion heater spanner sizes are available?

What immersion heater
spanner sizes are available?

Shop for Immersion Heater Spanners

Understanding the measurements

Image showing how A/F measurements are made All immersion heater spanner size measurements are A/F (across flats) which measures the distance between two parallel edges of the octagon that has been cut into the head.
Image to show the difference between metric and imperial measurements Metric measurements are given first in millimetres. Imperial measures, in inches, are given afterwards in brackets.

Standard immersion heater spanner sizes

Different types of immersion heater spanner at 86mm A/F The majority of immersion heater spanners are made to fit the standard size of immersion heater element and measure 86mm (3 3/8″) A/F.

Wonkee Donkee Tools