Quick-Disconnect Waterproof Crimp Connectors
The BC Series of heavy duty connectors is perfect for mission-critical applications. Crimp contacts provide reliability, while bayonet coupling offers the convenience of quick-disconnect mating. Six receptacle styles and a full range of EMI/RFI backshells provide the ultimate in cylindrical connector solutions for military, aerospace, and industrial applications.
For vacuum chamber or pressurized connector applications, the BC Series offers three hermetic receptacles for various mounting styles. Hermetic connectors feature steel shells and glass fused inserts rated up to 75 psi.
For additional help in specifying your connector solution, please contact a Milnec sales professional, or your authorized distributor for technical and sales support.
BC Series Plug
BC Series Receptacles
- Wall Mount Receptacle • BC00
- Jam Nut Receptacle • BC07
- Cable Mount Receptacle • BC01
- Thru-Bulkhead Receptacle • BC22
- Box Mount Receptacle (Hermetic) • BC12
- Jam Nut Receptacle (Hermetic) • BC13
- Solder Mount Receptacle (Hermetic) • BC19
BC Series Accessories
BC Series Backshells
- Straight Strain Relief Backshell • BCB2
- 90° Strain Relief Backshell • BCB4
- Straight Environmental Backshell • BCE2
- 45° Environmental Backshell • BCE3
- 90° Environmental Backshell • BCE4
- Straight EMI/RFI Env. Backshell • BCR2
- 45° EMI/RFI Env. Backshell • BCR3
- 90° EMI/RFI Env. Backshell • BCR4
- Straight Shrink Boot • BCK2
- 90° Shrink Boot • BCK4
- Boot Adapter • BCAB
- EMI/RFI Banding Boot Adapter • BCD2
- BC Series Catalog (17 MB)
Features & Benefits
- Waterproof (IP67 Rated)
- Quick-Disconnect Coupling
- 32 Insert Arrangements
- 12 to 24 AWG Compatible
- Hermetic Receptacles Available
- Thru-Bulkhead Receptacles Available
- Removable Crimp Contacts
- Field Serviceable Without Special Tools
- 23 Amps Rated
- Aircraft-Grade Aluminum Shells
- 500 Hour Salt Spray Rating
- Full Range of EMI/RFI & Environmental Backshells
Plug • BC06
Plug with optional grounding fingers
This straight plug has the option of grounding fingers that provide superior shell-to-shell conductivity for shielded applications. Coupling is achieved with a quick 1/3 turn. Tactile, audible, and visual cues signal complete coupling.
Wall Mount Receptacle • BC00
Receptacle with flange for easy mounting
The wall mount receptacle features a four hole flange for easy mounting to any panel. Accessory threads are provided on the rear of the connector for backshells. A cover is recommended to protect contacts when the receptacle is not in use.
Jam Nut Receptacle • BC07
Jam nut with integrated O-ring
A jam nut receptacle is preferred for applications that are subject to environmental hazards because of its integrated O-ring and single hole mounting design, which reduces the number of environmentally susceptible openings in an enclosure.
Cable Mount Receptacle • BC01
Extension Cord Receptacle
A cable mount receptacle is perfect for extension cord applications. A round flange protects the connector from damage when dragged or dropped. A backshell is required for strain relief, and a protective cover is recommended to protect contacts from damage when the receptacle is not in use.
Thru-Bulkhead Receptacle • BC22
Bulkhead feed-thru with dual receptacle ends
This connector has receptacles on both sides of the shell, allowing cable plugs to connect from both sides. The long side of the shell features socket contacts, the short side pin contacts. A mounting bracket and gasket are recommended.
Box Mount Receptacle (Hermetic) • BC12
Hermetic receptacle with low-profile design
Hermetic receptacles are made from high-strength carbon steel and glass inserts to create a true airtight seal. The low-profile rear design does not permit the use of a backshell. A gasket and mounting bracket with sealing screws are recommended for a reliable hermetic seal.
Jam Nut Receptacle (Hermetic) • BC13
Receptacle with a single mounting hole
Jam nut receptacles are preferred for hermetic applications because of the single mounting hole design and the integrated O-ring that seals the mounting location. A protective cover is recommended when the connector is not in use. The low-profile rear design does not permit the use of a backshell.
Solder Mount Receptacle (Hermetic) • BC19
Hermetic receptacle with smallest footprint
The hermetic solder mount receptacle is designed to have the smallest mounting footprint available. The reduced flange is useful when soldering in high densities to a panel or mounting to compact probes or sensors. The low-profile rear design does not permit the use of a backshell.
Straight Strain Relief Backshell • BCB2
Protect connectors from cable tension
This basic backshell protects contacts by providing strain relief from the cable or wire bundle. The self-locking option is recommend for high-vibration applications. Upgrade to an environmental backshell for elemental protection.
90° Strain Relief Backshell • BCB4
Strain relief and cable management
Angled strain relief is useful in environments where space is limited or where cable management is required. The self-locking option is recommend for high-vibration applications. Strain relief backshells should only be used for environmentally protected applications.
Straight Environmental Backshell • BCE2
Environmental protection and strain relief
Environmental backshells provide IP67 environmental protection from water, dirt, dust, and moisture by sealing against the cable jacket. A clamp on the back of the shell provides necessary strain relief. Upgrade to EMI/RFI environmental backshells for shielded applications.
45° Environmental Backshell • BCE3
Angled backshells provide accessibility
Environmental backshells are perfect for most applications that require IP67 environmental protection. They seal against cable jackets to keep out dirt, dust, water, and moisture. Upgrade to EMI/RFI environmental backshells for shielded applications.
90° Environmental Backshell • BCE4
Cable management and IP67 protection
Cable sealing backshells provide environmental protection and have a strain relief cable clamp. The 90° angle provides excellent cable management in confined spaces. Upgrade to EMI/RFI environmental backshells for shielded applications.
Straight EMI/RFI Environmental Backshell • BCR2
Ultimate environmental and EMI/RFI protection
These backshells provide strain relief from cable tension, environmental sealing rated to IP67, and feature 360° shield termination hardware. They provide complete EMI/RFI and environmental protection for all mission-critical designs.
45° EMI/RFI Environmental Backshell • BCR3
Full protection with cable management
Internal hardware in this backshell provides 360° EMI/RFI shield termination. The 45° angle helps to direct cables along panels that are hard to reach or that contain multiple connectors. Cable sealing design provides complete IP67 protection.
90° EMI/RFI Environmental Backshell • BCR4
Ultimate protection and cable management
This 90° backshell provides cable management in tight spaces. Glands seal against the cable jacket, providing IP67 environmental protection, while a cable clamp offers relief from cable strain, and internal hardware offers complete 360° shield termination for EMI/RFI protection.
Straight Shrink Boot • BCK2
Environmental protection, low-profile design
A shrink boot provides complete IP67 environmental protection and strain relief. Must be used with a boot adapter.
90° Shrink Boot • BCK4
Angled boot for simple cable management
A 90° shrink boot offers simple cable management, strain relief, and environmental protection. For proper installation, it must be used with a boot adapter.
Boot Adapter • BCAB
Adapter for shrink boot installation
This adapter is specifically designed to provide shrink boots with a groved platform for superior grip and environmental sealing. The design allows for unscrewing of the connector for field inspection without having to remove the shrink boot.
EMI/RFI Banding Boot Adapter • BCD2
EMI/RFI shield termination with shrink boots
The EMI/RFI banding boot adapter provides effective shield termination for applications using a shrink boot. Shielding is achieved with a band applied by a simple hand tool over a specially designed platform. The overlaying boot ensures strain relief and complete IP67 environmental protection.
Protective Covers • BCCP/BCCR
Always cover unmated connectors
Unmated connectors should always be paired with protective covers to environmentally seal and protect the contacts from impact or damage. Covers also keep dirt and debris from the coupling mechanism, ensuring reliable mating every time.
Stowage Receptacle • BCCD
Stow your cable while protecting your plug
Prevent operator injury or connector damage by providing a safe place to stow and organize your unused cables. Protective covers are recommended to always keep stowage receptacles clean and dry, so they’re ready for use when needed.
Mounting Gasket • BCGE
Environmentally seal your mounting point
Mounting gaskets will seal the mounting space between the receptacles and the panel to maintain the environmental integrity of your enclosure. They may be used in either rear or front mount receptacle installations.
Mounting Bracket & Screws • BCMB
High-reliability mounting hardware
Mounting brackets with captive stainless steel locking nuts provide a safety measure to prevent loose fasteners from falling into susceptible areas, which may cause equipment failure. Optional sealing screws with O-rings will effectively seal the mounting holes on your enclosure from water ingress.
BC Series Contacts & Sealing Plugs
High-performance crimp contacts
BC Series contacts are machined from copper alloy and are gold plated for the highest electrical continuity and corrosion resistance. The series offers contacts in sizes #12, #16, and #20, which are suitable for 12-24 AWG wire and are rated for up to 23 amps. In addition, thermocouples are available in sizes #16 and #20. Sealing plugs are required for open positions in any connector to maintain reliable environmental protection.
BC Series Crimp Tool • TK101
Crimp tool for all BC Series contacts
The TK101A precision crimp tool enables termination of contacts from #12 to #20. The tool features an eight impression crimp, which ensures maximum tensile strength between wire and contact. The cycle controlled ratchet is consistent and accurate and does not permit half crimps, ensuring complete and precise crimping every time.
BC Series Contact Insertion & Removal Tools
Reliable contact insertion and removal tools
We ship plastic contact insertion and removal tools with every crimp connector. And while they offer a convenient solution for connector repair in the field, some applications demand more durable and precise tooling. Our stainless steel contact insertion and removal tools are the best option for production environments where higher tool reliability is required.
- BC Series Contact Insertion & Removal Tool Data Sheet (144 KB)
- BC Series Catalog (16.15 MB)