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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Qty. RoHS ECAD Model Product
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Number of Rows
Mounting Style
Termination Style
Mounting Angle
Contact Gender
Contact Plating
Mating Post Length
Termination Post Length
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Wire Gauge
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Packaging
Molex Headers & Wire Housings 15 CKT R/A F/L HDR
Datasheet
1,657In Stock
Min.: 1
Mult.: 1

Headers Locking 15 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 6.71 mm (0.264 in) 3.58 mm (0.141 in) 7478 KK Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 100 Hdr FrLk Vert 03 Ckt Gold
Datasheet
5,926In Stock
Min.: 1
Mult.: 1

Headers Locking 3 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 6373 KK Wire-to-Board, Signal - 40 C + 80 C
Molex Headers & Wire Housings KK 100 Hdr FrLk Vert 03 Ckt Tin
Datasheet
12,001In Stock
Min.: 1
Mult.: 1

Headers Locking 3 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 7.49 mm (0.295 in) 3.56 mm (0.14 in) 6373 KK Wire-to-Board, Signal - 40 C + 80 C

Molex Headers & Wire Housings KK 100 Hdr FrLk Vert 04 Ckt Tin
Datasheet
10,930In Stock
Min.: 1
Mult.: 1

Headers Locking 4 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 6.6 mm (0.26 in) 3.68 mm (0.145 in) 6373 KK Wire-to-Board, Signal - 40 C + 80 C

Molex Headers & Wire Housings KK 100 Hdr FrLk Vert FrLk Vert 03 Ckt Tin
Datasheet
13,335In Stock
Min.: 1
Mult.: 1

Headers Locking 3 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 7.49 mm (0.295 in) 14.73 mm (0.58 in) 6373 KK Wire-to-Board, Signal - 40 C + 80 C
Molex Headers & Wire Housings BKWY HDR STR 4P tin
Datasheet
23,397In Stock
Min.: 1
Mult.: 1

Headers Breakaway 4 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 8.13 mm (0.32 in) 3.05 mm (0.12 in) 42375 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings 16CKT HEADER
Datasheet
15,339In Stock
Min.: 1
Mult.: 1

Headers Breakaway 16 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 42375 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Crimp Housing Crimp Housing 02 Ckt
Datasheet
53,222In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 2 Position 3.96 mm (0.156 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 6442 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Crimp Housing Crimp Housing 04 Ckt
Datasheet
21,467In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 4 Position 3.96 mm (0.156 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 6442 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Crimp Housing Crimp Housing 08 Ckt
Datasheet
7,934In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 8 Position 3.96 mm (0.156 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 6442 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings 3.96mm KK Hdr Vt Pol Pol-W RPin VrA 8Ckt
Datasheet
Product Comments
2,493In Stock
Min.: 1
Mult.: 1

Headers Shrouded 8 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 4.45 mm (0.175 in) 3190 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings R/A B/A HDR 6P TIN FRICTION LOCK
Datasheet
4,386In Stock
Min.: 1
Mult.: 1

Headers Breakaway 6 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 41672 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings VERT FRICTION LK 2 w/press-fit pegs
Datasheet
15,598In Stock
1,555Expected 06-07-2026
Min.: 1
Mult.: 1

Headers Locking 2 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.43 mm (0.45 in) 3.56 mm (0.14 in) 42491 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings 2.54MM 10P PCB CONN RA W/CAT EAR TERM
Datasheet
1,268In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 10 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Socket (Female) Tin 3.3 mm (0.13 in) 4455 KK Board-to-Board, Signal - 40 C + 105 C Tray
Molex Headers & Wire Housings KK 156 Header Assy F rLk Break 14 Ckt Tin
Datasheet
1,078In Stock
Min.: 1
Mult.: 1

Headers Breakaway 14 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 11.43 mm (0.45 in) 5.38 mm (0.212 in) 41672 KK - 40 C + 80 C
Molex Headers & Wire Housings .156 KK PCB CONNECTO
Datasheet
553In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 8 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Bottom Entry Socket (Female) Tin 3.18 mm (0.125 in) 41815 KK Tray
Molex Headers & Wire Housings TRIFURCON HOUSING
Datasheet
1,965In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 13 Position 3.96 mm (0.156 in) 1 Row Cable Mount / Free Hanging Crimp Straight Socket (Female) 6442 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK TERM 22-26G Reel of 7000
Datasheet
Product Comments
84,000In Stock
Min.: 7,000
Mult.: 7,000
Reel: 7,000

Contacts Crimp Socket (Female) Tin 2578 KK Wire-to-Board, Power 26 AWG Reel
Molex Headers & Wire Housings HOUSING KK .156IN GWT 9 CKT
Datasheet
2,198In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 9 Position 3.96 mm (0.156 in) 1 Row Cable Mount / Free Hanging Crimp Socket (Female) 3069 KK Wire-to-Board, Power Bulk
Molex Headers & Wire Housings VERT PCB HDR 9P GOLD PLATING
Datasheet
10,044In Stock
Min.: 1
Mult.: 1

Headers Pin Strip 9 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 7.49 mm (0.295 in) 3.43 mm (0.135 in) 4030 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 100 PCB Assy RtAn 18 Ckt Tin
Datasheet
2,268In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 18 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Socket (Female) Tin 3.3 mm (0.13 in) 4455 KK Board-to-Board, Signal - 40 C + 105 C Tray
Molex Headers & Wire Housings PCB R/A 5P tin
Datasheet
1,781In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 5 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Socket (Female) Tin 3.35 mm (0.132 in) 4455 KK Board-to-Board, Signal - 40 C + 80 C Tray
Molex Headers & Wire Housings HEADER 15POS .100 R/A GOLD
Datasheet
3,404In Stock
Min.: 1
Mult.: 1

Headers Breakaway 15 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 6.2 mm (0.244 in) 3.05 mm (0.12 in) 42377 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C
Molex Headers & Wire Housings 156 Bkwy 7 CKT
Datasheet
1,781In Stock
Min.: 1
Mult.: 1

Headers Breakaway 7 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 41661 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Hdr Assy FrLk k Bkwy 04 ckt 30 SAu
Datasheet
3,450In Stock
Min.: 1
Mult.: 1

Headers Breakaway 4 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 11.43 mm (0.45 in) 4.37 mm (0.172 in) 41671 KK Wire-to-Board, Power - 40 C + 80 C Bulk