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 (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
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Number of Rows
Mounting Style
Termination Style
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Contact Plating
Mating Post Length
Termination Post Length
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Packaging
Molex Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 07 Ckt 15Au T&R
Datasheet
1,987In Stock
Min.: 1
Mult.: 1
Reel: 2,700

Headers Locking 7 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 2.54 mm (0.1 in) 171857 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape

Molex Headers & Wire Housings 3 Circuit Friction Lock Solid Body KK100 Header Assembly
Datasheet
10,043In 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 - 40 C + 80 C
Molex Headers & Wire Housings 13 CKT R/A HEADER
Datasheet
3,965In Stock
Min.: 1
Mult.: 1

Headers Pin Strip 13 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 4094 KK Bulk
Molex Headers & Wire Housings KK 100 HDR FRLK RTAN 28 CKT TIN
Datasheet
1,676In Stock
Min.: 1
Mult.: 1

Headers Locking 28 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 15C RA HEADER
Datasheet
757In 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) Gold 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 2.54mm KK HDR RA FRICLK .5AU 12CKT
Datasheet
2,734In Stock
Min.: 1
Mult.: 1

Headers Locking 12 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 6.71 mm (0.264 in) 3.8 mm (0.15 in) 7395 KK Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings PCB RIGHT ANGLE 9P
Datasheet
2,210In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 9 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 3.35 mm (0.132 in) 4455 KK Tray
Molex Headers & Wire Housings 2.54MM BOARD CONN Top Entry 2 CKT
Datasheet
5,037In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 2 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Socket (Female) Gold 3.35 mm (0.132 in) 4455 KK Board-to-Board, Signal - 40 C + 80 C Tray
Molex Headers & Wire Housings 2.54MM BOARD CONN Top Entry 9 CKT
Datasheet
1,137In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 9 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Socket (Female) Gold 3.35 mm (0.132 in) 4455 KK Board-to-Board, Signal - 40 C + 80 C Tray

Molex Headers & Wire Housings KK 100 Hdr FrLk Vert 05 Ckt Tin
Datasheet
4,908In Stock
Min.: 1
Mult.: 1

Headers Locking 5 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 6.6 mm (0.26 in) 9.27 mm (0.365 in) 6373 KK Wire-to-Board, Signal - 40 C + 80 C

Molex Headers & Wire Housings 13P F/L HEADER
Datasheet
1,596In Stock
2,850Expected 16/04/2026
Min.: 1
Mult.: 1

Headers Locking 13 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 Bulk

Molex Headers & Wire Housings KK 100 Hdr FrLk Vert rLk Vert 03 Ckt Gold
Datasheet
3,675In 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 7.75 mm (0.305 in) 2.29 mm (0.09 in) 6373 KK Wire-to-Board, Signal - 40 C + 80 C
Molex Headers & Wire Housings 2.54MM HDR VT 4P 295/120 SN
Datasheet
12,767In 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 7.49 mm (0.295 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 KK254 Breakaway Hdr Vrt 7Ckt 15u Au
Datasheet
5,622In Stock
Min.: 1
Mult.: 1

Headers Breakaway 7 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 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 2.54MM BREAKAWAY Vertical 22 CKT Tin
Datasheet
2,824In Stock
Min.: 1
Mult.: 1

Headers Breakaway 22 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 6.09 mm (0.24 in) 3.18 mm (0.125 in) 42375 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 100 Hdr Assy RA B y RA Bkwy 06 Ckt Tin
Datasheet
24,446In Stock
Min.: 1
Mult.: 1

Headers Breakaway 6 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 10.29 mm (0.405 in) 3.43 mm (0.135 in) 42376 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 100 Hdr Assy RA B Bkwy 06 Ckt 30 SGold
Datasheet
6,391In Stock
Min.: 1
Mult.: 1

Headers Breakaway 6 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 8.23 mm (0.324 in) 3.05 mm (0.12 in) 42377 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 100 Hdr Assy Bkwy Assy Bkwy 09 Ckt Tin
Datasheet
4,340In Stock
Min.: 1
Mult.: 1

Headers Breakaway 9 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 10.29 mm (0.405 in) 3.43 mm (0.135 in) 42375 KK
Molex Headers & Wire Housings KK 100 Hdr Assy Bkwy Bkwy 36 Ckt 30 SGold
Datasheet
1,167In Stock
Min.: 1
Mult.: 1

Headers Breakaway 36 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
Molex Headers & Wire Housings 3.96mm KK Hdr Vt RPi Hdr Vt RPin VrA 8Ckt
Datasheet
2,655In Stock
Min.: 1
Mult.: 1

Headers Pin Strip 8 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 11.43 mm (0.45 in) 4.45 mm (0.175 in) 3192 KK Board-to-Board, Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings 3.96MM 14P RA HDR BKAWAY SN W/FRN LCK
Datasheet
808In 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 Board-to-Board, Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings 3P HEADER GOLD
Datasheet
2,716In Stock
Min.: 1
Mult.: 1

Headers Breakaway 3 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 11.43 mm (0.45 in) 5.38 mm (0.212 in) 41672 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings 10P HEADER GOLD
Datasheet
751In Stock
Min.: 1
Mult.: 1

Headers Breakaway 10 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 11.43 mm (0.45 in) 5.38 mm (0.212 in) 41672 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Hdr Assy Flat at Bkwy 18 ckt 20 Au
Datasheet
193In Stock
Min.: 1
Mult.: 1

Headers Breakaway 18 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) 41661 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Hdr Assy Flat Flat Bkwy 24 ckt Tin
Datasheet
1,131In Stock
Min.: 1
Mult.: 1

Headers Unshrouded 24 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 41661 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk