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Dongguan Mengpeng Hardware Electronics Co., Ltd in Dongguan, Guangdong lists Mengpeng Parts. Published figures include outer diameter (od) 4.5–16 mm, inner diameter 2.5–11 mm and material thickness 1.2–2.0 mm.
| Outer Diameter (OD) | 4.5–16 mm |
|---|---|
| Inner Diameter | 2.5–11 mm |
| Material Thickness | 1.2–2.0 mm |
| Material | 65Mn / SK5 / SK7 |
| Hardness | HRC 43–50 |
| Inner Diameter (ID) | 0.82 – 12.05 mm |
| Thickness | 0.5 – 1.5 mm |
| Length | 10.5 – 56 mm |
| Flat Width | 3.2 – 6 mm |
| Material System | Spring steel grades: 65Mn / SK5 / SK7 |
| Hardness Level | HRC 43 – 50 (heat-treated for stability) |
| Thickness Range | 0.5 – 1.5 mm precision forming |
| Spring steel grades | 65Mn / SK5 / SK7 |
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