It's M6 already or you then tapped the ends to M6?
Put the 2 countersunk screws each side for spacing?
Then the cupwasher, to put a Allen key bolt into?
You need to tap the thread into the bore of the axle, which is conveniently already almost exactly the correct size for an M6 pilot bore. Then you need 2-off M6×20mm 12.9 grade countersunk socket cap machine screws, 2-off cup washers and a 4mm Allen key in your tool bag.
You need to tap the thread into the bore of the axle, which is conveniently already almost exactly the correct size for an M6 pilot bore. Then you need 2-off M6×20mm 12.9 grade countersunk socket cap machine screws, 2-off cup washers and a 4mm Allen key in your tool bag.