MIL-PRF-39012 QPL cable connectors are divided into categories which the characteristics of their cable assembly method, and in some cases the actual assembly method.
Category A: Field-serviceable, with no special tools required for assembly. Our Category A connectors in series BNC, N, and TNC are standard military-clamp types; Category A connectors in SMA series are solder type.
Category B: Special tools may be required for assembly. Our Category B connectors in N series are crimp types which use standard, commercially-available crimp tools.
Category C: Crimp-type connectors which can be assembled with tools and die sizes.
Category D: Crimp-type connectors which can be assembled with tools and die sizes, and also have sizes for crimp sleeves, contacts, and other parts. Category D connectors have crimpable center contacts.
Click to open / download the pdf file: Delta Mil-Spec Catalog