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This is Steel Alloy Compression Spring 53.5mm x 14.1mm 4.04N/mm manufactured by RS Pro. The manufacturer part number is 121-220. It has 53.5mm free length. It has closed (square)/ground ends . Its spring rate is about 4.04n/mm . The product is made from highly stable and reliable alloy steel. Moreover, it has about 135.33n load at minimum working length . The wire has 1.6mm diameter. The product has 14.1mm external diameter. It has a minimum 20.1mm working length .
For more information please check the datasheets.
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