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Spanners come in all shapes and sizes, many being developed to deal with a specific job. By far the most important consideration when using a spanner is to ensure that it fits the nut perfectly. Too loose, and it will round the comers of the nut - and slip, often damaging the nut. Spanner and your hand. |
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The open ended spanner is the most common type, and may have a single or double end. |
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As the name implies, the ring spanner usually has completely enclosed head, & may have six or 12 flats. |
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small version of the crosscut saw, from 45 to 60cm (18 to 24 in), and with smaller teeth of 10-12 points. |
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Lighter version of the Cross & Straight Pein hammer, ideal for light joinery & cabinet work |
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Worm screw is located close to the opening jaw, which has rack engaged to the screw. |
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Made of tubing with flats arranged at each end. Holes through the tubing are designed to take a tommy bar. |
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Reversible ratchet ring head in each end. Working parts made from chrome vanadium |
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The most useful ring spanners have offset heads, allowing to connect with nuts in awkward places |
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