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 SPOX and KK 396 Wire-to-Board Header, Vert., w/ Friction Lock, 7 Pos. 09-65-2078 Molex 1: £0.368 11,551In Stock	Mfr. Part No. 09-65-2078 Mouser Part No 538-09-65-2078	Molex	Headers & Wire Housings SPOX and KK 396 Wire-to-Board Header, Vert., w/ Friction Lock, 7 Pos.	Datasheet	11,551In Stock	£0.368 £0.346 £0.325 £0.306 View £0.287 £0.277 £0.258	Min.: 1 Mult.: 1	Headers	Locking	7 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			5273	KK, SPOX			- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK 254 RPC Vert. Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 7.49mm Mating Pin Lg., 3.56mm Tail Lg., Bag, 2 Pos. 171856-0102 Molex 1: £0.217 19,144In Stock	Mfr. Part No. 171856-0102 Mouser Part No 538-171856-0102	Molex	Headers & Wire Housings KK 254 RPC Vert. Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 7.49mm Mating Pin Lg., 3.56mm Tail Lg., Bag, 2 Pos.	Datasheet	19,144In Stock	£0.217 £0.186	Min.: 1 Mult.: 1	Headers	Locking	2 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)	171856	KK	Wire-to-Board, Wire-to-Wire, Power, Signal		- 40 C	+ 105 C
Headers & Wire Housings KK 254 RPC R/A Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 6.73mm Mating Pin Lg., 2.54mm Tail Lg., T/R, 4 Pos. 171857-3004 Molex 1: £0.465 11,462In Stock	Mfr. Part No. 171857-3004 Mouser Part No 538-171857-3004	Molex	Headers & Wire Housings KK 254 RPC R/A Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 6.73mm Mating Pin Lg., 2.54mm Tail Lg., T/R, 4 Pos.	Datasheet	11,462In Stock	Cut Tape £0.465 £0.40 £0.367 £0.33 £0.256 Reel £0.256	Min.: 1 Mult.: 1 : 3,300	Headers	Locking	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin	6.73 mm (0.265 in)	2.54 mm (0.1 in)	171857	KK	Wire-to-Board		- 40 C	+ 105 C	Reel, Cut Tape
Headers & Wire Housings KK 254 Crimp Housing, 10 Pos., Natural 22-01-2101 Molex 1: £0.188 16,532In Stock	Mfr. Part No. 22-01-2101 Mouser Part No 538-22-01-2101	Molex	Headers & Wire Housings KK 254 Crimp Housing, 10 Pos., Natural Learn More about Molex kk	Datasheet	16,532In Stock	£0.188 £0.162 £0.148 £0.145 View £0.138 £0.132 £0.131	Min.: 1 Mult.: 1	Wire Housings		10 Position	2.54 mm (0.1 in)	1 Row								2695	KK	Wire-to-Board, Signal				Bulk
Headers & Wire Housings KK 254 Wire-to-Board Header, Single Row, Vert., 4 Pos., PA Polyamide Nylon, Tin (Sn) Pltg 22-03-2041 Molex 1: £0.18 63,064In Stock	Mfr. Part No. 22-03-2041 Mouser Part No 538-22-03-2041	Molex	Headers & Wire Housings KK 254 Wire-to-Board Header, Single Row, Vert., 4 Pos., PA Polyamide Nylon, Tin (Sn) Pltg Learn More about Molex kk	Datasheet	63,064In Stock	£0.18 £0.164 £0.158 £0.142 View £0.137 £0.13 £0.126 £0.125	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			4030	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Wire-to-Board Header, Single Row, Vert., 6 Pos., PA Polyamide Nylon, Tin (Sn) Pltg 22-03-2061 Molex 1: £0.225 42,501In Stock	Mfr. Part No. 22-03-2061 Mouser Part No 538-22-03-2061	Molex	Headers & Wire Housings KK 254 Wire-to-Board Header, Single Row, Vert., 6 Pos., PA Polyamide Nylon, Tin (Sn) Pltg Learn More about Molex kk	Datasheet	42,501In Stock	£0.225 £0.199 £0.187 £0.169 View £0.153 £0.148 £0.145 £0.14	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	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 2 Pos., 0.76 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, Bag 22-28-4027 Molex 1: £0.488 25,267In Stock	Mfr. Part No. 22-28-4027 Mouser Part No 538-22-28-4027	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 2 Pos., 0.76 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, Bag Learn More about Molex kk	Datasheet	25,267In Stock	£0.488 £0.416 £0.395 £0.353 View £0.315 £0.30 £0.286 £0.268 £0.226	Min.: 1 Mult.: 1	Headers	Breakaway	2 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., Tin (Sn) Pltg, Mating Pin Lg. 7.49mm, Bag 22-28-4062 Molex 1: £0.346 16,508In Stock	Mfr. Part No. 22-28-4062 Mouser Part No 538-22-28-4062	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 6 Pos., Tin (Sn) Pltg, Mating Pin Lg. 7.49mm, Bag Learn More about Molex kk	Datasheet	16,508In Stock	£0.346 £0.293 £0.258 £0.228 View £0.205 £0.168 £0.157 £0.142 £0.126	Min.: 1 Mult.: 1	Headers	Breakaway	6 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					Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 6 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4063 Molex 1: £0.496 48,161In Stock	Mfr. Part No. 22-28-4063 Mouser Part No 538-22-28-4063	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 6 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	48,161In Stock	£0.496 £0.424 £0.395 £0.355 View £0.34 £0.339 £0.247	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 Breakaway Header, Vert., 7 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4070 Molex 1: £0.292 48,301In Stock	Mfr. Part No. 22-28-4070 Mouser Part No 538-22-28-4070	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 7 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	48,301In Stock	£0.292 £0.253 £0.252 £0.228 View £0.196 £0.194 £0.15 £0.14 £0.139	Min.: 1 Mult.: 1	Headers	Breakaway	7 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	6.09 mm (0.24 in)		42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 2 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, w/ Kinked PC Tails, Bag 22-28-5024 Molex 1: £0.233 18,975In Stock	Mfr. Part No. 22-28-5024 Mouser Part No 538-22-28-5024	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 2 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 8.13mm, w/ Kinked PC Tails, Bag Learn More about Molex kk	Datasheet	18,975In Stock	£0.233 £0.211 £0.185 £0.16 View £0.124 £0.122	Min.: 1 Mult.: 1	Headers	Breakaway	2 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 Breakaway Header, R/A SMT Compatible, 16 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.2mm, Bag 22-28-8160 Molex 1: £0.925 6,114In Stock	Mfr. Part No. 22-28-8160 Mouser Part No 538-22-28-8160	Molex	Headers & Wire Housings KK 254 Breakaway Header, R/A SMT Compatible, 16 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.2mm, Bag Learn More about Molex kk	Datasheet	6,114In Stock	£0.925 £0.788 £0.766 £0.667 View £0.647 £0.582 £0.517 £0.471 £0.416	Min.: 1 Mult.: 1	Headers	Breakaway	16 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin			42377	KK					Bulk
Headers & Wire Housings KK 396 Breakaway Header, R/A w/ Friction Lock, 3 Pos., Tin (Sn) Pltg 26-48-1036 Molex 1: £0.33 10,709In Stock	Mfr. Part No. 26-48-1036 Mouser Part No 538-26-48-1036	Molex	Headers & Wire Housings KK 396 Breakaway Header, R/A w/ Friction Lock, 3 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	10,709In Stock	£0.33 £0.291 £0.278 £0.252 View £0.233 £0.225 £0.224 £0.223	Min.: 1 Mult.: 1	Headers	Breakaway	3 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
Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 7 Pos., Tin (Sn) Pltg 26-60-4070 Molex 1: £0.413 10,487In Stock 590On Order	Mfr. Part No. 26-60-4070 Mouser Part No 538-26-60-4070	Molex	Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 7 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	10,487In Stock 590On Order	£0.413 £0.387	Min.: 1 Mult.: 1	Headers	Shrouded	7 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			41791	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 4 Pos., Tin (Sn) Pltg, w/ Circuit 2 Voided 26-62-4040 Molex 1: £0.323 33,359In Stock	Mfr. Part No. 26-62-4040 Mouser Part No 538-26-62-4040	Molex	Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 4 Pos., Tin (Sn) Pltg, w/ Circuit 2 Voided Learn More about Molex kk	Datasheet	33,359In Stock	£0.323 £0.273 £0.271 £0.23 £0.208	Min.: 1 Mult.: 1	Headers	Locking	4 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)	41791	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 24 Pos., 0.38 m Gold (Au) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. 41671-0023 Molex 1: £3.47 825In Stock	Mfr. Part No. 41671-0023 Mouser Part No 538-41671-0023	Molex	Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 24 Pos., 0.38 m Gold (Au) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. Learn More about Molex kk	Datasheet	825In Stock	£3.47	Min.: 1 Mult.: 1	Headers	Breakaway	24 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
Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 2 Pos., 0.38 m Gold (Au) Selective Pltg 41791-0832 Molex 1: £0.383 5,455In Stock	Mfr. Part No. 41791-0832 Mouser Part No 538-41791-0832	Molex	Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 2 Pos., 0.38 m Gold (Au) Selective Pltg Learn More about Molex kk	Datasheet	5,455In Stock	£0.383 £0.37	Min.: 1 Mult.: 1	Headers	Locking	2 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	11.43 mm (0.45 in)	3.56 mm (0.14 in)	41791	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 6 Pos., 0.38 m Gold (Au) Selective Pltg 41791-0836 Molex 1: £1.62 5,872In Stock	Mfr. Part No. 41791-0836 Mouser Part No 538-41791-0836	Molex	Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 6 Pos., 0.38 m Gold (Au) Selective Pltg Learn More about Molex kk	Datasheet	5,872In Stock	£1.62 £1.38 £1.27 £1.15 View £1.01 £0.986 £0.96	Min.: 1 Mult.: 1	Headers	Locking	6 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	11.43 mm (0.45 in)	3.56 mm (0.14 in)	41791	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK Crimp Terminal, Series 2477, Humpback, w/ Tin (Sn) Plated Brass Contact, 24-18 AWG, Loose 08-50-0110 Molex 1: £0.135 22,275In Stock	Mfr. Part No. 08-50-0110 Mouser Part No 538-08-50-0110	Molex	Headers & Wire Housings KK Crimp Terminal, Series 2477, Humpback, w/ Tin (Sn) Plated Brass Contact, 24-18 AWG, Loose Learn More about Molex kk	Datasheet	22,275In Stock	£0.135 £0.116 £0.104 £0.10 View £0.088 £0.083 £0.078 £0.076 £0.072	Min.: 1 Mult.: 1	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Tin			2477	KK		24 AWG to 18 AWG	- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK Trifurcon Crimp Terminal 7258, 26-22 AWG, Bag, Brass Tin (Sn) 08-50-0185 Molex 1: £0.098 33,780In Stock	Mfr. Part No. 08-50-0185 Mouser Part No 538-08-50-0185	Molex	Headers & Wire Housings KK Trifurcon Crimp Terminal 7258, 26-22 AWG, Bag, Brass Tin (Sn) Learn More about Molex kk	Datasheet	33,780In Stock	£0.098 £0.08 £0.067 £0.066 View £0.061 £0.058 £0.055 £0.054 £0.051	Min.: 1 Mult.: 1	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Tin			7258	KK		26 AWG to 22 AWG	- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 396 Female Crimp Terminal, 24-18 AWG, Bag, Brass, 0.76 m Selective Gold (Au) Plated 08-55-0134 Molex 1: £0.615 9,172In Stock	Mfr. Part No. 08-55-0134 Mouser Part No 538-08-55-0134	Molex	Headers & Wire Housings KK 396 Female Crimp Terminal, 24-18 AWG, Bag, Brass, 0.76 m Selective Gold (Au) Plated Learn More about Molex kk	Datasheet	9,172In Stock	£0.615 £0.532 £0.486 £0.271 View £0.266 £0.25 £0.245	Min.: 1 Mult.: 1	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Gold			2478	KK		24 AWG to 18 AWG	- 40 C	+ 85 C	Bulk
Headers & Wire Housings 4.8mm Pit. Crimp Terminal, Male, Reel 08-70-0002 Molex 7,000: £0.072 42,000In Stock	Mfr. Part No. 08-70-0002 Mouser Part No 538-08-70-0002	Molex	Headers & Wire Housings 4.8mm Pit. Crimp Terminal, Male, Reel	Datasheet	42,000In Stock	Reel £0.072 £0.068 £0.066 £0.062 £0.061	Min.: 7,000 Mult.: 7,000 : 7,000	Contacts					Cable Mount / Free Hanging	Crimp		Pin (Male)	Tin			5006	KK		24 AWG to 18 AWG	- 40 C	+ 105 C	Reel
Headers & Wire Housings KK 3.96mm Crimp Housing, 13 Pos., Natural 09-50-7131 Molex 1: £0.217 9,270In Stock	Mfr. Part No. 09-50-7131 Mouser Part No 538-09-50-7131	Molex	Headers & Wire Housings KK 3.96mm Crimp Housing, 13 Pos., Natural Learn More about Molex kk	Datasheet	9,270In Stock	£0.217 £0.216 £0.203 £0.175	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	13 Position	3.96 mm (0.156 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				2139	KK					Bulk
Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 10 Ckt 10-11-2104 Molex 1: £0.353 9,950In Stock	Mfr. Part No. 10-11-2104 Mouser Part No 538-10-11-2104	Molex	Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 10 Ckt Learn More about Molex kk	Datasheet	9,950In Stock	£0.353 £0.302 £0.27 £0.256 £0.23	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	10 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp	Straight	Socket (Female)				7880	KK
Headers & Wire Housings KK 254 PC Board Conn., Bottom Entry, End-to-End Stackable, 2.54 m Tin (Sn) Pltg, 12 Pos. 22-14-2124 Molex 1: £1.05 1,974In Stock	Mfr. Part No. 22-14-2124 Mouser Part No 538-22-14-2124	Molex	Headers & Wire Housings KK 254 PC Board Conn., Bottom Entry, End-to-End Stackable, 2.54 m Tin (Sn) Pltg, 12 Pos. Learn More about Molex kk	Datasheet	1,974In Stock	£1.05 £0.899 £0.826 £0.719 View £0.71 £0.595 £0.59 £0.589 £0.582	Min.: 1 Mult.: 1	Headers	Receptacle	12 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