Die Spring Inside (Hole) Diameter: 12.5 mm Wire/Rod Diameter: 7 mm (this is the maximum shaft or rod that can fit inside the spring) Free (Uncompressed) Length: 25 mm Outer Diameter (approx.): ID + 2 × wire thickness ≃ 12.5 mm + 2 × 2.75 mm ≃ 18.0 mm
For Customized Springs WhatsApp me- 9308175632
Minimum order quantity 5 pcs
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Dimensions
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Inside (Hole) Diameter: 12.5 mm
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Wire/Rod Diameter: 7 mm (this is the maximum shaft or rod that can fit inside the spring)
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Free (Uncompressed) Length: 25 mm
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Outer Diameter (approx.): ID + 2 × wire thickness ≃ 12.5 mm + 2 × 2.75 mm ≃ 18.0 mm
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Spring Rate
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18.6 N/mm: You need about 18.6 newtons of force to compress the spring by 1 mm. So at full solid height (fully compressed), the total force would be 18.6 N/mm × (25 mm – solid height) (solid height typically ≃ 4 × wire dia ≃ 11 mm).
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Material & Finish
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Typically made from high‑carbon or alloy spring‑steel to resist fatigue.
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Often color‑coated (green here) to indicate duty rating and to provide minimal corrosion resistance.
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