Table A3.
Specifications of compression spring used in the headrest
| Manufacturer | SAMINI Co., Ltd. |
|---|---|
| Model number | 12–1232 |
| Wire diameter |
1.2 mm |
| Material | SUS304WPB |
| Inner diameter |
12 mm |
| Free length | 25 mm |
| Spring constant | 2.39 N/mm |
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