Is a metal tool with a shaped opening whose end fits round a nut or bolt so that you can turn it to loosen or tighten it. Spanner first appeared in the 15th century in the form of a box-spanner therewas no standard size and each fastener and spanner would have been made individually bya blacksmith thetools were large insize and not easily to handle. In 1970’s there wasadvancement in manufacturing of spanner in terms of size and quality in Australiaspanners are made to Australian standard andnoware used successfully by Australian exporters all around the world. Types of spanner There are different types of spanner according to their work commonly are.
Mostly spanner come from different varieties of size and standard and size standards changed over the years which lead to have a lot of spanner sizes most of this are M6,M8,M10 and M12 where by M stands for metric and the number is the width of the threaded section of the fasteners in millimeter. Rusting of spanner If the rust has not affect to far into the tool it can be removed by using simple sold items which can be found in household these are;
The metal parts of spanner are given some of coating to reduce the risk of corrosion, a rust inhibitor solution is applied to all spanner toward the end of manufacturing process. Some of spanners are plated with either nickel or chromium or both which are more corrosion resistance. Spanner care
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February 2019
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