Headers & Wire Housings – Mouser Ireland

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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 (EUR) 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 Crimp Housing, Friction Ramp w/ Polarizing Ribs, 13 Pos., Natural 22-01-3137 Molex 1: €0.212 23,961In Stock 4,000Expected 17/12/2026	Mfr. Part No. 22-01-3137 Mouser Part No 538-22-01-3137	Molex	Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp w/ Polarizing Ribs, 13 Pos., Natural Learn More about Molex kk	Datasheet	23,961In Stock 4,000Expected 17/12/2026	€0.212	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	13 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 FrLk Vert 3CKT - 2P Voided 22-11-2037 Molex 1: €0.636 14,469In Stock	Mfr. Part No. 22-11-2037 Mouser Part No 538-22-11-2037	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 3CKT - 2P Voided Learn More about Molex kk	Datasheet	14,469In Stock	€0.636 €0.552 €0.505 €0.456 View €0.416 €0.345 €0.323 €0.308 €0.294	Min.: 1 Mult.: 1	Headers	Locking	3 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.49 mm (0.295 in)	3.56 mm (0.14 in)	6373	KK	Wire-to-Board, Signal		- 40 C	+ 80 C
Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 14 Pos., 0.51 m Gold (Au) Pltg, Bag 22-12-2144 Molex 1: €3.90 6,044In Stock	Mfr. Part No. 22-12-2144 Mouser Part No 538-22-12-2144	Molex	Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 14 Pos., 0.51 m Gold (Au) Pltg, Bag Learn More about Molex kk	Datasheet	6,044In Stock	€3.90 €3.31 €3.01 €3.00 View €2.55 €2.45 €2.38 €2.29 €2.16	Min.: 1 Mult.: 1	Headers	Locking	14 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Gold			7478	KK	Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 8 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4080 Molex 1: €0.353 16,931In Stock	Mfr. Part No. 22-28-4080 Mouser Part No 538-22-28-4080	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 8 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	16,931In Stock	€0.353 €0.306 €0.274 €0.236 View €0.22 €0.185	Min.: 1 Mult.: 1	Headers	Breakaway	8 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 15 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4150 Molex 1: €0.791 17,850In Stock	Mfr. Part No. 22-28-4150 Mouser Part No 538-22-28-4150	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 15 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	17,850In Stock	€0.791 €0.673 €0.646 €0.557 View €0.55 €0.489 €0.433 €0.417 €0.354	Min.: 1 Mult.: 1	Headers	Breakaway	15 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, R/A, 2 Pos., Tin (Sn) Pltg, Mating Pin Lg. 10.29mm, Bag 22-28-6021 Molex 1: €0.206 28,894In Stock	Mfr. Part No. 22-28-6021 Mouser Part No 538-22-28-6021	Molex	Headers & Wire Housings KK 254 Breakaway Header, R/A, 2 Pos., Tin (Sn) Pltg, Mating Pin Lg. 10.29mm, Bag Learn More about Molex kk	Datasheet	28,894In Stock	€0.206 €0.158 €0.132 €0.117 View €0.10 €0.072 €0.064 €0.062 €0.061	Min.: 1 Mult.: 1	Headers	Breakaway	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin	10.29 mm (0.405 in)	3.05 mm (0.12 in)	42376	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, R/A, 22 Pos., Tin (Sn) Pltg, Mating Pin Lg. 9.17mm, Bag 22-28-6220 Molex 1: €1.21 3,116In Stock	Mfr. Part No. 22-28-6220 Mouser Part No 538-22-28-6220	Molex	Headers & Wire Housings KK 254 Breakaway Header, R/A, 22 Pos., Tin (Sn) Pltg, Mating Pin Lg. 9.17mm, Bag	Datasheet	3,116In Stock	Cut Tape €1.21 €1.03 €0.877 Reel €0.869 €0.782 €0.732	Min.: 1 Mult.: 1 : 225	Headers	Breakaway	22 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin	9.17 mm (0.361 in)	3.05 mm (0.12 in)	42376	KK					Reel, Cut Tape
Headers & Wire Housings KK 254 Breakaway Header, R/A SMT Compatible, 3 Pos., Tin (Sn) Pltg, Mating Pin Lg. 8.23mm, Bag 22-28-8031 Molex 1: €0.224 17,281In Stock	Mfr. Part No. 22-28-8031 Mouser Part No 538-22-28-8031	Molex	Headers & Wire Housings KK 254 Breakaway Header, R/A SMT Compatible, 3 Pos., Tin (Sn) Pltg, Mating Pin Lg. 8.23mm, Bag Learn More about Molex kk	Datasheet	17,281In Stock	€0.224 €0.188 €0.172 €0.15 View €0.121 €0.11 €0.107	Min.: 1 Mult.: 1	Headers	Breakaway	3 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin			42377	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 156 Crimp Housing Housing Ramp 03 Ckt 26-03-4032 Molex 1: €0.198 38,910In Stock	Mfr. Part No. 26-03-4032 Mouser Part No 538-26-03-4032	Molex	Headers & Wire Housings KK 156 Crimp Housing Housing Ramp 03 Ckt Learn More about Molex kk	Datasheet	38,910In Stock	€0.198 €0.166 €0.147 €0.127 View €0.113 €0.094 €0.093 €0.085 €0.081	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	3 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
Headers & Wire Housings KK 396 Breakaway Header, Vert., 7 Pos., Matte Tin (Sn) Pltg 26-48-1071 Molex 1: €0.439 5,685In Stock	Mfr. Part No. 26-48-1071 Mouser Part No 538-26-48-1071	Molex	Headers & Wire Housings KK 396 Breakaway Header, Vert., 7 Pos., Matte Tin (Sn) Pltg Learn More about Molex kk	Datasheet	5,685In Stock	€0.439 €0.43 €0.429 €0.427 View €0.418 €0.409 €0.398 €0.393 €0.385	Min.: 1 Mult.: 1	Headers	Breakaway	7 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			41661	KK					Bulk
Headers & Wire Housings 24 POS HEADER 26-48-2245 Molex 1: €8.18 537In Stock	Mfr. Part No. 26-48-2245 Mouser Part No 538-26-48-2245	Molex	Headers & Wire Housings 24 POS HEADER Learn More about Molex kk	Datasheet	537In Stock	€8.18 €7.52 €7.09 €6.97 View €6.63 €6.38 €6.24 €6.06	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
Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 14 Pos., Tin (Sn) Pltg 26-60-4140 Molex 1: €1.11 3,324In Stock	Mfr. Part No. 26-60-4140 Mouser Part No 538-26-60-4140	Molex	Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 14 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	3,324In Stock	€1.11 €0.963 €0.937 €0.754 View €0.714 €0.667	Min.: 1 Mult.: 1	Headers	Shrouded	14 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, 16 Pos., Tin (Sn) Pltg 26-60-4160 Molex 1: €1.42 2,898In Stock	Mfr. Part No. 26-60-4160 Mouser Part No 538-26-60-4160	Molex	Headers & Wire Housings KK 396 Header, Vert., Friction Lock, 16 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	2,898In Stock	€1.42 €1.20 €0.955 €0.92 €0.861	Min.: 1 Mult.: 1	Headers	Locking	16 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			41791	KK					Bulk
Headers & Wire Housings KK 396 Header, Vert., Friction Lock w/ Press-fit Plastic Peg PCB, 8 Pos., Tin (Sn) Pltg 26-64-4080 Molex 1: €0.611 8,207In Stock	Mfr. Part No. 26-64-4080 Mouser Part No 538-26-64-4080	Molex	Headers & Wire Housings KK 396 Header, Vert., Friction Lock w/ Press-fit Plastic Peg PCB, 8 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	8,207In Stock	€0.611 €0.547 €0.497 €0.467 €0.447	Min.: 1 Mult.: 1	Headers	Locking	8 Position	3.96 mm (0.156 in)	1 Row	Press Fit	Solder Pin	Straight	Pin (Male)	Tin			42491	KK					Bulk
Headers & Wire Housings KK 396 Header, Vert. w/ Snap-In Pegs, TH, 6 Pos., No Polarizing Key at Circuit 4, Lead-Free 36642-0001 Molex 1: €1.14 4,389In Stock	Mfr. Part No. 36642-0001 Mouser Part No 538-36642-0001	Molex	Headers & Wire Housings KK 396 Header, Vert. w/ Snap-In Pegs, TH, 6 Pos., No Polarizing Key at Circuit 4, Lead-Free	Datasheet	4,389In Stock	Cut Tape €1.14 €1.01 €0.937 €0.791 Reel €0.676 View €0.776 €0.673	Min.: 1 Mult.: 1 : 1,120	Headers	Shrouded	6 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	9.27 mm (0.365 in)	2.79 mm (0.11 in)	8619	KK	Wire-to-Board, Signal				Reel, Cut Tape
Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 12 Pos., 0.38 m Gold (Au) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. 41671-0011 Molex 1: €3.12 2,131In Stock	Mfr. Part No. 41671-0011 Mouser Part No 538-41671-0011	Molex	Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 12 Pos., 0.38 m Gold (Au) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. Learn More about Molex kk	Datasheet	2,131In Stock	€3.12 €3.07 €3.06 €2.99 View €2.85 €2.76 €2.70 €2.56	Min.: 1 Mult.: 1	Headers	Breakaway	12 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, R/A w/ Friction Lock, 13 Pos., Tin (Sn) Pltg 26-60-5130 Molex 1: €1.30 693In Stock	Mfr. Part No. 26-60-5130 Mouser Part No 538-26-60-5130	Molex	Headers & Wire Housings KK 396 Header, R/A w/ Friction Lock, 13 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	693In Stock	€1.30 €1.14 €1.08 €1.01 View €0.92 €0.872	Min.: 1 Mult.: 1	Headers	Locking	13 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)	41792	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 156 PCB Assy Top 06 Ckts Tin 09-48-2063 Molex 1: €1.28 777In Stock	Mfr. Part No. 09-48-2063 Mouser Part No 538-09-48-2063	Molex	Headers & Wire Housings KK 156 PCB Assy Top 06 Ckts Tin Learn More about Molex kk	Datasheet	777In Stock	€1.28 €0.661 €0.641 €0.627	Min.: 1 Mult.: 1	Headers	Receptacle	6 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Socket (Female)	Tin		3.05 mm (0.12 in)	41815	KK			- 40 C	+ 80 C
Headers & Wire Housings KK 396 Header, R/A, Friction Lock w/ Press-fit Plastic Peg PCB, 5 Pos., Tin (Sn) Pltg 26-64-5050 Molex 1: €0.843 1,677In Stock	Mfr. Part No. 26-64-5050 Mouser Part No 538-26-64-5050	Molex	Headers & Wire Housings KK 396 Header, R/A, Friction Lock w/ Press-fit Plastic Peg PCB, 5 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	1,677In Stock	€0.843 €0.468 €0.404 €0.396	Min.: 1 Mult.: 1	Headers	Locking	5 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 396 PC Board Conn., Bottom Entry, Hooks Removed, Brass, 4.06mm Tail Lg., 2.54 m Tin (Sn) Pltg, 4 Pos. 41815-0329 Molex 1: €0.585 200In Stock	Mfr. Part No. 41815-0329 Mouser Part No 538-41815-0329	Molex	Headers & Wire Housings KK 396 PC Board Conn., Bottom Entry, Hooks Removed, Brass, 4.06mm Tail Lg., 2.54 m Tin (Sn) Pltg, 4 Pos.	Datasheet	200In Stock	€0.585 €0.51 €0.466 €0.421 View €0.384 €0.318 €0.273 €0.259 €0.257	Min.: 1 Mult.: 1	Headers	Socket Assembly		3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Socket (Female)	Tin			41815	KK			- 40 C	+ 105 C
Headers & Wire Housings KK 3.96mm Crimp Terminal Housing, Use With Trifurcon Terminals, Friction Ramp, 16 Pos., Natural 26-03-4161 Molex 1: €0.525 3,519In Stock	Mfr. Part No. 26-03-4161 Mouser Part No 538-26-03-4161	Molex	Headers & Wire Housings KK 3.96mm Crimp Terminal Housing, Use With Trifurcon Terminals, Friction Ramp, 16 Pos., Natural Learn More about Molex kk	Datasheet	3,519In Stock	€0.525 €0.518 €0.517 €0.32	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	16 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
Headers & Wire Housings KK 396 Breakaway Header, R/A, 7 Pos., Tin (Sn) Pltg 26-48-1072 Molex 1: €0.98 3,000In Stock	Mfr. Part No. 26-48-1072 Mouser Part No 538-26-48-1072	Molex	Headers & Wire Housings KK 396 Breakaway Header, R/A, 7 Pos., Tin (Sn) Pltg Learn More about Molex kk	Datasheet	3,000In Stock	€0.98 €0.929 €0.845 €0.759 View €0.691 €0.648 €0.486	Min.: 1 Mult.: 1	Headers	Breakaway	7 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin	14.55 mm (0.573 in)	4.95 mm (0.195 in)	41662	KK					Bulk
Headers & Wire Housings KK 396 Crimp Terminal 8818, 22-18 AWG, Reel, Phosphor Bronze Tin (Sn) 08-52-0131 Molex 7,000: €0.06 14,000In Stock	Mfr. Part No. 08-52-0131 Mouser Part No 538-08-52-0131	Molex	Headers & Wire Housings KK 396 Crimp Terminal 8818, 22-18 AWG, Reel, Phosphor Bronze Tin (Sn) Learn More about Molex kk	Datasheet	14,000In Stock	Reel €0.06 €0.058	Min.: 7,000 Mult.: 7,000 : 7,000	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Tin			8818	KK		22 AWG to 18 AWG	- 40 C	+ 105 C	Reel
Headers & Wire Housings KK 3.96mm Crimp Housing, 9 Pos., Natural 09-50-7091 Molex 1: €0.206 10,807In Stock	Mfr. Part No. 09-50-7091 Mouser Part No 538-09-50-7091	Molex	Headers & Wire Housings KK 3.96mm Crimp Housing, 9 Pos., Natural Learn More about Molex kk	Datasheet	10,807In Stock	€0.206 €0.181	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)				2139	KK					Bulk
Headers & Wire Housings KK 3.96mm Crimp Housing, 20 Pos., Natural 09-50-7201 Molex 1: €0.439 5,970In Stock	Mfr. Part No. 09-50-7201 Mouser Part No 538-09-50-7201	Molex	Headers & Wire Housings KK 3.96mm Crimp Housing, 20 Pos., Natural Learn More about Molex kk	Datasheet	5,970In Stock	€0.439 €0.436 €0.354	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	20 Position	3.96 mm (0.156 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				2139	KK					Bulk