KK Connectors

Molex KK Interconnection System consists of connectors that form the building block for creating thousands of different configurations. This system offers polarization features that ensure correct mating. The system incorporates offset header entry holes that provide +180°C polarization and allows both power and signal to carry through the same housing. This connector system also enables loading with optional polarization keys and pegs that ensure the one-way mating of headers and housings. Molex KK Interconnection System comes with customizable KK headers that offer more polarization options and design configurations. These include headers with voided pins, customized pin lengths, kinked PC tails, and varying tin or gold plating options.

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Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Type
Number of Positions
Pitch
Number of Rows
Mounting Style
Termination Style
Mounting Angle
Contact Gender
Contact Plating
Mating Post Length
Termination Post Length
Series
Tradename
Application
Wire Gauge
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Molex Headers & Wire Housings .200 KK HEADER
Datasheet
1,899In Stock
Min.: 1
Mult.: 1

Headers Unshrouded 10 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.94 mm (0.47 in) 3.94 mm (0.155 in) 3003 KK Bulk
Molex Headers & Wire Housings 5.08mm KK Hdr Vt RPi t RPin VrB 5Sn 10Ckt
Datasheet
405In Stock
Min.: 1
Mult.: 1

Headers Unshrouded 10 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 16.69 mm (0.657 in) 3.94 mm (0.155 in) 3003 KK 0 C + 50 C Bulk
Molex Headers & Wire Housings 5.08MM 2P VERT HDR W/POLAR BACKWL
Datasheet
3,048In Stock
12,000Expected 8/27/2026
Min.: 1
Mult.: 1

Headers Shrouded 2 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 2599 KK Bulk
Molex Headers & Wire Housings 5.08MM 4P VERT HDR W/POLAR BACKWL
Datasheet
1,598In Stock
10,800Expected 9/16/2026
Min.: 1
Mult.: 1

Headers Shrouded 4 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 2599 KK Tray
Molex Headers & Wire Housings 5.08MM 6P VERT HDR W/POLAR BACKWL
Datasheet
195In Stock
Min.: 1
Mult.: 1

Headers Shrouded 6 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 2599 KK Bulk
Molex Headers & Wire Housings 5.08MM 7P VERT HDR W/POLAR BACKWL
Datasheet
992In Stock
Min.: 1
Mult.: 1

Headers Polarized 7 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.4 mm (0.449 in) 4.45 mm (0.175 in) 2599 KK Bulk
Molex Headers & Wire Housings 5.08MM 9P VERT HDR W/POLAR BACKWL
Datasheet
22In Stock
Min.: 1
Mult.: 1

Headers Shrouded 9 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 2599 KK Bulk
Molex Headers & Wire Housings KK200 POL WAFER ASSEMBLY 2599M10A
Datasheet
807In Stock
Min.: 1
Mult.: 1

Headers Shrouded 10 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.4 mm (0.449 in) 4.45 mm (0.175 in) 2599 KK Bulk
Molex Headers & Wire Housings KK200 POL WAFER ASSEMBLY 2599M12A
Datasheet
721In Stock
Min.: 1
Mult.: 1

Headers Shrouded 12 Position 5.08 mm (0.2 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 2599 KK Bulk
Molex Headers & Wire Housings HSG HIGH PRESSURE 5P
Datasheet
20,367In Stock
37,500Expected 11/12/2026
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 5 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 7880 KK High Pressure Bulk
Molex Headers & Wire Housings 8CKT HOUSING
Datasheet
6,158In Stock
24,000Expected 10/22/2026
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 8 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 7880 KK High Pressure Bulk
Molex Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 8 Ckt
Datasheet
5,543In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 8 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Straight 7880 KK
Molex Headers & Wire Housings 9P HIGH PRESSURE
Datasheet
15,717In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 9 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 7880 KK High Pressure Bulk
Molex Headers & Wire Housings 12P TERM HOUSING
Datasheet
8,457In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 12 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 7880 KK High Pressure Bulk
Molex Headers & Wire Housings HOUSING 15P
Datasheet
5,752In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 15 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 7880 KK High Pressure Bulk
Molex Headers & Wire Housings POLARIZING KEY
Datasheet
27,577In Stock
Min.: 1
Mult.: 1

Accessories 1 Position Straight Pin (Male) Tin 4161 KK Bulk
Molex Headers & Wire Housings KK Hdr Vrt 2 Ckt 3.96mm Pitch Sn
Datasheet
3,241In Stock
Min.: 1
Mult.: 1

Headers Locking 2 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.38 mm (0.448 in) 2.37 mm (0.093 in) 171813 KK Wire-to-Board - 40 C + 105 C Bulk
Molex Headers & Wire Housings KK Hdr Vrt 8 Ckt 3.96mm Pitch Sn
Datasheet
1,183In Stock
Min.: 1
Mult.: 1

Headers Locking 8 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.38 mm (0.448 in) 2.37 mm (0.093 in) 171813 KK Wire-to-Board - 40 C + 105 C Bulk
Molex Headers & Wire Housings KK RPC 156 Hdr Assy FrLk 02 Ckt Tin T&R
Datasheet
1,263In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

Headers Locking 2 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.38 mm (0.448 in) 2.37 mm (0.093 in) 171813 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape, MouseReel
Molex Headers & Wire Housings KK RPC 156 Hdr Assy FrLk 03 Ckt Tin T&R
Datasheet
154In Stock
1,500Expected 9/15/2026
Min.: 1
Mult.: 1
: 500

Headers Locking 3 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.38 mm (0.448 in) 2.37 mm (0.093 in) 171813 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape
Molex Headers & Wire Housings KK RPC 156 Hdr Assy FrLk 06 Ckt Tin T&R
Datasheet
492In Stock
1,500Expected 11/26/2026
Min.: 1
Mult.: 1
: 500

Headers Locking 6 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.38 mm (0.448 in) 2.37 mm (0.093 in) 171813 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape
Molex Headers & Wire Housings KK RPC 156 Hdr Assy FrLk 03 Ckt 15Au T&R
Datasheet
537In Stock
Min.: 1
Mult.: 1
: 500

Headers Locking 3 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 11.38 mm (0.448 in) 2.37 mm (0.093 in) 171813 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape
Molex Headers & Wire Housings KK RPC 156 Hdr Assy FL RA 02 Ckt Tin T&R
Datasheet
2,103In Stock
Min.: 1
Mult.: 1
: 840

Headers Locking 2 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 11.33 mm (0.446 in) 2.54 mm (0.1 in) 171814 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape
Molex Headers & Wire Housings KK RPC 156 Hdr Assy FL RA 06 Ckt Tin T&R
Datasheet
964In Stock
Min.: 1
Mult.: 1
: 840

Headers Locking 6 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 11.33 mm (0.446 in) 2.54 mm (0.1 in) 171814 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape
Molex Headers & Wire Housings KK RPC 156 Hdr Assy FL RA 04Ckt 15Au T&R
Datasheet
209In Stock
Min.: 1
Mult.: 1
: 840

Headers Locking 4 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 11.33 mm (0.446 in) 2.54 mm (0.1 in) 171814 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape