Spanners are hand tools used for fastening and loosening nuts or bolt heads with a hexagonal shape. They are typically made from hardened chrome vanadium steel or beryllium copper and comprise of a ring style spanner on one end and an open jaw spanner on the other. The ring end recess is generally a six-point or twelve-point opening and sometimes offers a ratchet mechanism that helps apply maximum force with minimal user effort.
Spanners are available in most metric sizes to allow for greater functionality across a wider range of applications. Our range includes leading brands such as Bahco, Facom, Gear Wrench, Stahlwille, Wera & RS PRO.
How do spanners work?
Spanners rely upon the physical strengths of the user to deliver accurate force when attaching the recessed head to the fastener and rotating clockwise or anti-clockwise. Depending on the material they are made from, they can often withstand large amounts of torque being applied to stubborn fasteners.
