Free Length: 87.2mm
Spring Rate: 2.52N/mm
Material: Steel
Wire Diameter: 1.8mm
Maximum Extended Length: 134.80mm
Initial Tension: 21.05N
Outside Diameter: 12mm
This is Steel Extension Spring 87.2mm x 12mm manufactured by RS Pro. The manufacturer part number is 121-321. It has 87.2mm free length. Its spring rate is about 2.52n/mm . The product is made from highly stable and reliable steel. The wire has 1.8mm diameter. It has a maximum 134.80mm extended length . Moreover, it has an initial tension about 21.05n . The product has 12mm external diameter.
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