. Purpose: In order to piercing bolts through. 2. Requirements: -Position hole tolerance: Need exactly the same threaded holes with sheet or peel the mold plates are high. Tolerance of diameter size: do not need high because not to join the Assembly. But need to ensure bigger diameter bolts, to easily removable bolts. For example, Select the select level Ø10 (mm) bolts of the hole is 15 D tolerance distributed domain > the real diameter of holes from 10.04 > 10.62 (mm). 3. The method of machining: drilling.
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