The various configurations of the connectors are intended for use as follows:

Series I connectors: General application within weapon system where a quick disconnect coupling system is required for blind mating or other mating problem areas. These connectors provide high-vibration characteristics and are suitable for severe wind and moisture problem (SWAMP) areas with proper connector accessories.

Class G, finish F: Provides a conductive shell for EMI considerations but with additional requirements for space grade applications.

Class H: Same as class Y, but with additional requirements for space grade applications.

Class T, finish F: Provides a conductive shell for EMI considerations.

Class Y: Applications where pressure must be maintained.

Classes R, U and X: Applications requiring high corrosion resistance.

Series II connectors: General application within weapon systems which are not subjected to high vibration or SWAMP areas. These connectors are not scoop proof (see 6.1.1). Connectors are light weight.

Series III connectors: General application within weapons systems and are suitable for blind mating areas. These connectors provide high-vibration characteristics at elevated temperature and are suitable for SWAMP areas with the proper connector accessories.

Class W - Provides a corrosion resistance shell.

Class F - Provides a conductive shell for EMI requirements.

Class K - Provides a stainless steel firewall connector for engine applications.

Class L - Provides a stainless steel connector for general applications.

Class S - Provides a stainless steel firewall connector with enhanced EMI performance.

Class Y - Applications where pressure must be maintained.

Class J - Provides a corrosion resistant, lightweight composite shell with conductivity equivalent to class W.

Class M - Provides a corrosion resistant, lightweight composite connector with conductive plating for EMI performance equivalent to class F.

Class G - Same as class F but additional requirements for space grade applications.

Class H - Same as class Y but additional requirements for space grade applications.

Classes R and X - Applications requiring high corrosion resistance (for metallic shells).

Classes P, T and Z - Applications requiring alternatives to cadmium plating.

Series IV connectors: General application within weapons systems where a quick disconnect coupling system is required for blind mating or other mating problem areas. These connectors provide high-vibration characteristics and are suitable for SWAMP areas with the proper connector accessories.

Classes W, F, G, H, J, M, and Y: Same as series III.

Classes R and X: Applications requiring high corrosion resistance.

Classes P, T and Z: Applications requiring alternatives to cadmium plating.

Series I and II are intermateable with series I and II as specified in MIL-DTL-27599.