BT 40 Face mill arbor draw bar thread size M16 X 2.0mm M6 X 1.0mm thread in pilot .500 pilot dia. .550 long .25 keys.I bought this thinking it was cat 40 looks the same but threads are metric.Some tarnish but looks new.Have questions please ask.
Bt 40 face mill arbor M16 X 2.0mm draw bar threads M8 X 1.25mm threads in pilot.Pilot dia. is .750 X .650 long with 5/16 keys.looks same as cat 40 but has metric threads.Some tarnish but looks like new.Have any questions please ask.
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