Headers & Wire Housings – Mouser United Kingdom

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	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
Headers & Wire Housings KK 254 Breakaway Header, Vert., 4 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, Bag 22-28-4044 Molex 1: £0.383 45,629In Stock	Mfr. Part No. 22-28-4044 Mouser Part No 538-22-28-4044	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 4 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, Bag Learn More about Molex kk	Datasheet	45,629In Stock	£0.383 £0.345 £0.342 £0.312 View £0.276 £0.261 £0.243	Min.: 1 Mult.: 1	Headers	Breakaway	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold		3.05 mm (0.12 in)	42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 6 Pos., 0.76 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, Bag 22-28-4067 Molex 1: £1.19 23,835In Stock	Mfr. Part No. 22-28-4067 Mouser Part No 538-22-28-4067	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 6 Pos., 0.76 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, Bag Learn More about Molex kk	Datasheet	23,835In Stock	£1.19 £1.07 £1.05 £0.969 View £0.934 £0.863 £0.818 £0.803 £0.678	Min.: 1 Mult.: 1	Headers	Breakaway	6 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
Headers & Wire Housings KK 254 PCB Header, TH, Breakaway, Vert., 1 Circuit, Gold (Au) Flash Pltg, Tray Packaging, Lead-free 87891-0101 Molex 1: £0.39 7,712In Stock	Mfr. Part No. 87891-0101 Mouser Part No 538-87891-0101	Molex	Headers & Wire Housings KK 254 PCB Header, TH, Breakaway, Vert., 1 Circuit, Gold (Au) Flash Pltg, Tray Packaging, Lead-free	Datasheet	7,712In Stock	£0.39 £0.334 £0.306 £0.276 View £0.252 £0.212 £0.198 £0.189 £0.174	Min.: 1 Mult.: 1			1 Position	2.54 mm (0.1 in)	1 Row		Solder Pin	Straight		Gold			87891	KK			- 55 C	+ 105 C	Tray
Headers & Wire Housings STRT HDR ASSY 6P 22-03-2062 Molex 1: £0.308 8,619In Stock	Mfr. Part No. 22-03-2062 Mouser Part No 538-22-03-2062	Molex	Headers & Wire Housings STRT HDR ASSY 6P Learn More about Molex kk	Datasheet	8,619In Stock	£0.308 £0.289 £0.283 £0.279 View £0.278 £0.229 £0.223	Min.: 1 Mult.: 1	Headers	Pin Strip	6 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			4030	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C
Headers & Wire Housings Mini-Latch / KK Wire-to-Board Header, Vert., w/ Friction Ramp, 2 Pos., Gold (Au) Pltg, Natural 22-11-1021 Molex 1: £0.488 38,457In Stock	Mfr. Part No. 22-11-1021 Mouser Part No 538-22-11-1021	Molex	Headers & Wire Housings Mini-Latch / KK Wire-to-Board Header, Vert., w/ Friction Ramp, 2 Pos., Gold (Au) Pltg, Natural Learn More about Molex mini latch wire to board system	Datasheet	38,457In Stock	£0.488 £0.437 £0.372 £0.332 View £0.316 £0.303 £0.282 £0.268	Min.: 1 Mult.: 1	Headers	Locking	2 Position	2.5 mm (0.098 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.5 mm (0.295 in)	3.4 mm (0.134 in)	5045	Mini-Latch/KK	Wire-to-Board, Signal		- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 17 Pos., 0.51 m Gold (Au) Pltg, Bag 22-12-2174 Molex 1: £4.80 736In Stock	Mfr. Part No. 22-12-2174 Mouser Part No 538-22-12-2174	Molex	Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 17 Pos., 0.51 m Gold (Au) Pltg, Bag Learn More about Molex kk	Datasheet	736In Stock	£4.80 £2.85	Min.: 1 Mult.: 1	Headers	Locking	17 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
Headers & Wire Housings KK 254 PC Board Conn., Bottom Entry, End-to-End Stackable, 2.54 m Tin (Sn) Pltg, 10 Pos. 22-14-2104 Molex 1: £1.10 1,593In Stock	Mfr. Part No. 22-14-2104 Mouser Part No 538-22-14-2104	Molex	Headers & Wire Housings KK 254 PC Board Conn., Bottom Entry, End-to-End Stackable, 2.54 m Tin (Sn) Pltg, 10 Pos. Learn More about Molex kk	Datasheet	1,593In Stock	£1.10 £0.934 £0.849 £0.788 View £0.751 £0.732	Min.: 1 Mult.: 1	Headers	Receptacle	10 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Bottom Entry	Socket (Female)	Tin		3.35 mm (0.132 in)	4455	KK	Board-to-Board, Signal		- 40 C	+ 80 C	Tray
Headers & Wire Housings KK 254 PC Board Conn., R/A, End-to-End Stackable, 2.54 m Tin (Sn) Pltg, 11 Pos. 22-15-2116 Molex 1: £0.705 1,782In Stock	Mfr. Part No. 22-15-2116 Mouser Part No 538-22-15-2116	Molex	Headers & Wire Housings KK 254 PC Board Conn., R/A, End-to-End Stackable, 2.54 m Tin (Sn) Pltg, 11 Pos. Learn More about Molex kk	Datasheet	1,782In Stock	£0.705 £0.688 £0.684 £0.677 View £0.672 £0.668 £0.586 £0.582 £0.567	Min.: 1 Mult.: 1	Headers	Socket Assembly	11 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
Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 9 Pos., 1.52 m Matte Tin (Sn) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. 26-48-1095 Molex 1: £0.89 3,600In Stock	Mfr. Part No. 26-48-1095 Mouser Part No 538-26-48-1095	Molex	Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 9 Pos., 1.52 m Matte Tin (Sn) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. Learn More about Molex kk	Datasheet	3,600In Stock	£0.89 £0.766 £0.717 £0.651 £0.635	Min.: 1 Mult.: 1	Headers	Breakaway	9 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			41671	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 156 Header Assy F FrLk Bkwy 24 ckt Ti 26-48-8247 Molex 1: £2.10 1,658In Stock	Mfr. Part No. 26-48-8247 Mouser Part No 538-26-48-8247	Molex	Headers & Wire Housings KK 156 Header Assy F FrLk Bkwy 24 ckt Ti Learn More about Molex kk	Datasheet	1,658In Stock	£2.10 £1.78 £1.52 £1.51 View £1.35 £1.11	Min.: 1 Mult.: 1	Headers	Unshrouded	24 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	11.38 mm (0.448 in)	11.53 mm (0.454 in)	41671	KK	Board-to-Board, Wire-to-Board, Signal
Headers & Wire Housings KK 396 Header, R/A, Friction Lock w/ Press-fit Plastic Peg PCB, 3 Pos., Tin (Sn) Pltg 26-64-5030 Molex 1: £0.368 16,315In Stock	Mfr. Part No. 26-64-5030 Mouser Part No 538-26-64-5030	Molex	Headers & Wire Housings KK 396 Header, R/A, Friction Lock w/ Press-fit Plastic Peg PCB, 3 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	16,315In Stock	£0.368 £0.331 £0.329 £0.299 View £0.281 £0.246	Min.: 1 Mult.: 1	Headers	Locking	3 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin	11.43 mm (0.45 in)	3.96 mm (0.156 in)	42492	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 8 Pos., Natural 22-01-2087 Molex 1: £0.18 22,167In Stock	Mfr. Part No. 22-01-2087 Mouser Part No 538-22-01-2087	Molex	Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 8 Pos., Natural Learn More about Molex kk	Datasheet	22,167In Stock	£0.18 £0.167	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	8 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				2695	KK	Wire-to-Board, Signal				Bulk
Headers & Wire Housings KK 100 Hdr Flat 04 Ckt W/VOID TIN 22-04-2041 Molex 1: £0.217 20,718In Stock	Mfr. Part No. 22-04-2041 Mouser Part No 538-22-04-2041	Molex	Headers & Wire Housings KK 100 Hdr Flat 04 Ckt W/VOID TIN Learn More about Molex kk	Datasheet	20,718In Stock	£0.217 £0.186 £0.158 £0.141 View £0.13 £0.117 £0.116	Min.: 1 Mult.: 1	Headers	Pin Strip	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	7.49 mm (0.295 in)	3.43 mm (0.135 in)	4380	KK			- 40 C	+ 80 C
Headers & Wire Housings KK 254 Solid Header, Vert., w/ Friction Lock, 18 Pos., 2.54 m Matte Tin (Sn) Pltg, 3.56mm Tail Lg., Bag 22-23-2181 Molex 1: £0.834 5,729In Stock	Mfr. Part No. 22-23-2181 Mouser Part No 538-22-23-2181	Molex	Headers & Wire Housings KK 254 Solid Header, Vert., w/ Friction Lock, 18 Pos., 2.54 m Matte Tin (Sn) Pltg, 3.56mm Tail Lg., Bag Learn More about Molex kk	Datasheet	5,729In Stock	£0.834 £0.803 £0.796	Min.: 1 Mult.: 1	Headers	Locking	18 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	Bulk
Headers & Wire Housings KK 396 Wire-to-Board Header, Vert., Round Pin, w/ Polarizing Wall, 8 Pos., Tin (Sn) Pltg 26-19-2081 Molex 1: £1.31 2,464In Stock	Mfr. Part No. 26-19-2081 Mouser Part No 538-26-19-2081	Molex	Headers & Wire Housings KK 396 Wire-to-Board Header, Vert., Round Pin, w/ Polarizing Wall, 8 Pos., Tin (Sn) Pltg	Datasheet	2,464In Stock	£1.31 £1.13 £0.818 £0.773 View £0.759 £0.744	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
Headers & Wire Housings KK 254 PC Board Conn., Bottom Entry, End-to-End Stackable, w/ Cat Ear Terminal, 2.54 m Tin (Sn) Pltg, 8 Pos. 38-00-1398 Molex 1: £1.73 3,818In Stock	Mfr. Part No. 38-00-1398 Mouser Part No 538-38-00-1398	Molex	Headers & Wire Housings KK 254 PC Board Conn., Bottom Entry, End-to-End Stackable, w/ Cat Ear Terminal, 2.54 m Tin (Sn) Pltg, 8 Pos. Learn More about Molex kk	Datasheet	3,818In Stock	£1.73 £1.48 £1.26 £1.13 View £0.969 £0.899	Min.: 1 Mult.: 1	Headers	Socket Assembly	8 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Bottom Entry	Socket (Female)	Tin		3.3 mm (0.13 in)	4455	KK	Board-to-Board, Signal		- 40 C	+ 105 C	Tray
Headers & Wire Housings KK 156 Header Assy F rLk Break 14 Ckt Tin 41672-0203 Molex 1: £2.99 1,078In Stock	Mfr. Part No. 41672-0203 Mouser Part No 538-41672-0203	Molex	Headers & Wire Housings KK 156 Header Assy F rLk Break 14 Ckt Tin Learn More about Molex kk	Datasheet	1,078In Stock	£2.99 £2.72 £1.62 £1.55	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
Headers & Wire Housings KK 396 Crimp Terminal 2578, 26-22 AWG, Bag, Brass, 0.38 m Selective Gold(Au) 08-55-0106 Molex 1: £0.346 18,049In Stock	Mfr. Part No. 08-55-0106 Mouser Part No 538-08-55-0106	Molex	Headers & Wire Housings KK 396 Crimp Terminal 2578, 26-22 AWG, Bag, Brass, 0.38 m Selective Gold(Au) Learn More about Molex kk	Datasheet	18,049In Stock	£0.346 £0.292 £0.26 £0.248 View £0.188 £0.182 £0.174 £0.154	Min.: 1 Mult.: 1	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Gold			2578	KK		26 AWG to 22 AWG	- 40 C	+ 85 C	Bulk
Headers & Wire Housings KK 396 PC Board Conn., R/A, w/ Ramp, Phosphor Bronze, 3.68mm Tail Lg., 1.52 m Matte Tin (Sn) Pltg, 6 Pos. 09-48-1064 Molex 1: £0.803 6,941In Stock	Mfr. Part No. 09-48-1064 Mouser Part No 538-09-48-1064	Molex	Headers & Wire Housings KK 396 PC Board Conn., R/A, w/ Ramp, Phosphor Bronze, 3.68mm Tail Lg., 1.52 m Matte Tin (Sn) Pltg, 6 Pos. Learn More about Molex kk	Datasheet	6,941In Stock	£0.803 £0.735 £0.659 £0.634 £0.63	Min.: 1 Mult.: 1	Headers	Receptacle	6 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Right Angle	Socket (Female)	Tin			41815	KK			- 40 C	+ 105 C	Tray
Headers & Wire Housings KK 254 Wire-to-Board Header, R/A, w/ Friction Lock, 10 Pos. 22-05-7108 Molex 1: £0.773 8,597In Stock	Mfr. Part No. 22-05-7108 Mouser Part No 538-22-05-7108	Molex	Headers & Wire Housings KK 254 Wire-to-Board Header, R/A, w/ Friction Lock, 10 Pos. Learn More about Molex kk	Datasheet	8,597In Stock	£0.773 £0.661 £0.635 £0.625 View £0.572 £0.514 £0.469 £0.439 £0.43	Min.: 1 Mult.: 1	Headers	Locking	10 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin	6.71 mm (0.264 in)	3.8 mm (0.15 in)	7395	KK	Wire-to-Board, Signal		- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 30 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4300 Molex 1: £1.17 6,068In Stock	Mfr. Part No. 22-28-4300 Mouser Part No 538-22-28-4300	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 30 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	6,068In Stock	£1.17 £1.13 £1.08 £0.747 View £0.73 £0.729	Min.: 1 Mult.: 1	Headers	Breakaway	30 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
Headers & Wire Housings KK 396 Breakaway Header, Vert., 3 Pos., Matte Tin (Sn) Pltg, Pin Lg. 26.21mm (1.032") 26-58-0030 Molex 1: £0.233 7,617In Stock	Mfr. Part No. 26-58-0030 Mouser Part No 538-26-58-0030	Molex	Headers & Wire Housings KK 396 Breakaway Header, Vert., 3 Pos., Matte Tin (Sn) Pltg, Pin Lg. 26.21mm (1.032") Learn More about Molex kk	Datasheet	7,617In Stock	£0.233 £0.17 £0.163 £0.16	Min.: 1 Mult.: 1	Headers	Unshrouded	3 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	19.43 mm (0.765 in)	3.56 mm (0.14 in)	41661	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 396 PC Board Conn., Top Entry, w/ Ramp, Phosphor Bronze, 3.05mm Tail Lg., 1.52 m Matte Tin (Sn) Pltg, 6 Pos. 09-48-4068 Molex 1: £0.788 3,993In Stock	Mfr. Part No. 09-48-4068 Mouser Part No 538-09-48-4068	Molex	Headers & Wire Housings KK 396 PC Board Conn., Top Entry, w/ Ramp, Phosphor Bronze, 3.05mm Tail Lg., 1.52 m Matte Tin (Sn) Pltg, 6 Pos. Learn More about Molex kk	Datasheet	3,993In Stock	£0.788 £0.67 £0.669 £0.621	Min.: 1 Mult.: 1	Headers	Receptacle	6 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Socket (Female)	Tin			41815	KK			- 40 C	+ 105 C	Tray
Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 6 Ckt 10-11-2064 Molex 1: £0.203 24,537In Stock	Mfr. Part No. 10-11-2064 Mouser Part No 538-10-11-2064	Molex	Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 6 Ckt Learn More about Molex kk	Datasheet	24,537In Stock	£0.203 £0.175 £0.156 £0.148 View £0.133 £0.126 £0.121	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	6 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp	Straight	Socket (Female)				7880	KK
Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 12 Pos., Natural 22-01-2127 Molex 1: £0.292 52,752In Stock	Mfr. Part No. 22-01-2127 Mouser Part No 538-22-01-2127	Molex	Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 12 Pos., Natural Learn More about Molex kk	Datasheet	52,752In Stock	£0.292 £0.252 £0.223 £0.204 £0.196	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	12 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				2695	KK	Wire-to-Board, Signal				Bulk