ER nut ER25UM ER32UM ER40UM ER50UM collets chuck nuts for CNC tool holders
$2.82 – $3.66
Machine tools ER Nuts for CNC
1. DIN6499 -D/E
2. 40Cr ER Nut
3. Precision below 0.005; 0.008 or 0.015mm
4. HRC:40
5. High Durability nuts
6. For collet chuck and tool holder
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