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  • Extension springs with turnable bolt — a helical steel extension spring with a turnable bolt hook at one end

  • 6447

    Extension spring with turnable bolt ESTB 2.5X20X85

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Dimensions and characteristics

dWire diameter
2.5 mm
DoOuter diameter
20 mm
L0Unloaded length
85 mm
d2Thread
M6
RSpringrate
3.4 N/mm
FnForce at Ln
250 N
LnPermitted loaded length for static load
150 mm
F0Initial Force
29 N
NvActive coils
22
Technical drawing of Extension springs with turnable bolt showing key dimensions and measurements