The packaging contains Receptacle.There is a Through Hole mounting type for the device.This product is packaged in a case marked Bulk.Product number 851 belongs to the 851 Series.
851-43-045-10-011000 Features
851 series
851-43-045-10-011000 Applications
There are a lot of Mill-Max Manufacturing Corp. 851-43-045-10-011000 Rectangular Connectors applications.