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D-389 Compression spring is sold as a box of 12 pieces. The listed price is for the complete 12-piece box, not for a single spring.
Built for buyers who search by exact spring reference, D-389 gives you the key dimensions and load data needed before ordering.
Technical highlights include material: EN 10270-1, wire diameter: 6.3 mm, outer diameter: 38.3 mm, free length: 225 mm, spring rate: 26.473 N/mm. Use the specification table below to verify the dimensions and performance data against your application before placing an order.
- Pack size: 12 pieces per box
- Price basis: price shown is for one box containing 12 springs
- Product type: Compression spring
- Best for: maintenance, replacement, prototyping, and specification-led purchasing
Technical specifications
| Article number | D-389 |
|---|---|
| Material | EN 10270-1 |
| Spring ends | Closed and ground |
| Wire diameter [d] | 6.3 mm |
| Inner coil diameter [Di] | - mm |
| Mean coil diameter [D] | 32 mm |
| Outer coil diameter [De] | 38.3 mm |
| Maximum mandrel diameter [Dd] | 24.7 mm |
| Minimum housing diameter [Dh] | 39.6 mm |
| Free length [L0] | 225 mm |
| Buckling length [Lk] | 165.2 mm |
| Max. static force [Fn] | 2109.513 N |
| Min. static length [Ln] | 145.32 mm |
| Max. static deflection [sn] | 79.68 mm |
| Max. dynamic force [Fndyn] | 1853.131 N |
| Min. dynamic length [Lndyn] | 155 mm |
| Max. dynamic stroke [shdyn] | 27.68 mm |
| Spring pitch [S] | 11.822 mm |
| Active coils [n] | 18.5 pc. |
| Total coils [nt] | - pc. |
| Spring rate [R] | 26.473 N/mm |
| Weight per spring | 507.8145 g |
Please check all measurements carefully before ordering. Spring performance can vary depending on installation conditions and application requirements.