[suiteskull]

For future searches:

Per Realoem (which has much better break downs!!):


Hex nut w/ flange, M16X1,5-10 ZNS3, Qty 2, Part #: 33306771102
Self-locking collar nut, M12X1,5-10 ZNS3, Qty 2, Part #: 33326760668