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Regarding the representation of the suspension rod

2010-07-08View Original

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JB/T8130.2-1999: For spring hangers, when a No. 20 spring is used, the diameter of the suspension rod is specified as M48x3. What does the number 3 represent in this context?
Reply #22010-07-08
3 indicates the pitch of the threads. 3mm。 . .

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