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United Kingdom
This is Steel Extension Spring 78.5mm x 18mm manufactured by RS PRO. The manufacturer part number is RS_121-393. It has 78.5mm free length. Its spring rate is about 35.8n/mm . The product is made from highly stable and reliable steel. The wire has 3.6mm diameter. It has a maximum 93.50mm extended length . Moreover, it has an initial tension about 630n . The product has 18mm external diameter.
For more information please check the datasheets.
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