Headers & Wire Housings

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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 (PEN) 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 4P VERT HDR 15u Au 22-28-4044 Molex 1: S/ 2.10 45,977In Stock	Mfr. Part # 22-28-4044 Mouser Part # 538-22-28-4044	Molex	Headers & Wire Housings 4P VERT HDR 15u Au Learn More about Molex kk	Datasheet	45,977In Stock	S/ 2.10 S/ 1.87 S/ 1.84 S/ 1.67 View S/ 1.49 S/ 1.39 S/ 1.21	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 RA SMT B/A HDR 4P 22-28-8042 Molex 1: S/ 1.32 68,519In Stock	Mfr. Part # 22-28-8042 Mouser Part # 538-22-28-8042	Molex	Headers & Wire Housings RA SMT B/A HDR 4P Learn More about Molex kk	Datasheet	68,519In Stock	S/ 1.32	Min.: 1 Mult.: 1	Headers	Breakaway	4 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	Bulk
Headers & Wire Housings KK 100 Hdr Assy Bkwy Bkwy 06 Ckt 30 SGold 22-28-4067 Molex 1: S/ 5.33 23,869In Stock	Mfr. Part # 22-28-4067 Mouser Part # 538-22-28-4067	Molex	Headers & Wire Housings KK 100 Hdr Assy Bkwy Bkwy 06 Ckt 30 SGold Learn More about Molex kk	Datasheet	23,869In Stock	S/ 5.33 S/ 4.94 S/ 4.90 S/ 4.59 View S/ 4.55 S/ 4.40 S/ 4.24 S/ 4.16 S/ 3.39	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 2.54mm SRSW TH HDR W/O CAP GFLF 1CKT 87891-0101 Molex 1: S/ 2.02 7,912In Stock	Mfr. Part # 87891-0101 Mouser Part # 538-87891-0101	Molex	Headers & Wire Housings 2.54mm SRSW TH HDR W/O CAP GFLF 1CKT	Datasheet	7,912In Stock	S/ 2.02 S/ 1.73 S/ 1.58 S/ 1.43 View S/ 1.31 S/ 1.10 S/ 1.03 S/ 0.981 S/ 0.899	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 .156 KK PCB CONNECTO 09-48-4089 Molex 1: S/ 4.75 2,484In Stock	Mfr. Part # 09-48-4089 Mouser Part # 538-09-48-4089	Molex	Headers & Wire Housings .156 KK PCB CONNECTO Learn More about Molex kk	Datasheet	2,484In Stock	S/ 4.75 S/ 4.28 S/ 3.93 S/ 3.66 View S/ 3.44 S/ 3.27	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
Headers & Wire Housings HSG 8P W/RAMP/RIBS 09-50-8083 Molex 1: S/ 1.13 9,861In Stock	Mfr. Part # 09-50-8083 Mouser Part # 538-09-50-8083	Molex	Headers & Wire Housings HSG 8P W/RAMP/RIBS Learn More about Molex kk	Datasheet	9,861In Stock	S/ 1.13 S/ 0.938 S/ 0.833 S/ 0.821 View S/ 0.775 S/ 0.771 S/ 0.705	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	8 Position	3.96 mm (0.156 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				41695	KK	Wire-to-Board, Power
Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 4 Ckt 10-11-2044 Molex 1: S/ 0.662 40,162In Stock	Mfr. Part # 10-11-2044 Mouser Part # 538-10-11-2044	Molex	Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 4 Ckt Learn More about Molex kk	Datasheet	40,162In Stock	S/ 0.662 S/ 0.58 S/ 0.533 S/ 0.487 View S/ 0.452 S/ 0.413 S/ 0.389 S/ 0.385 S/ 0.374	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	4 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp	Straight	Socket (Female)				7880	KK
Headers & Wire Housings PCB BOTTOM ENTRY 14P 22-14-2144 Molex 1: S/ 9.15 2,069In Stock	Mfr. Part # 22-14-2144 Mouser Part # 538-22-14-2144	Molex	Headers & Wire Housings PCB BOTTOM ENTRY 14P Learn More about Molex kk	Datasheet	2,069In Stock	S/ 9.15 S/ 7.75 S/ 6.23 S/ 5.72 View S/ 5.53 S/ 5.02 S/ 4.71 S/ 3.93 S/ 3.82	Min.: 1 Mult.: 1	Headers	Receptacle	14 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 2.54MM BOARD CONN RA 7 CKT Gold 22-16-2070 Molex 1: S/ 5.57 5,566In Stock	Mfr. Part # 22-16-2070 Mouser Part # 538-22-16-2070	Molex	Headers & Wire Housings 2.54MM BOARD CONN RA 7 CKT Gold Learn More about Molex kk	Datasheet	5,566In Stock	S/ 5.57 S/ 4.87 S/ 4.63 S/ 4.05 View S/ 4.01 S/ 3.45 S/ 2.96 S/ 2.79	Min.: 1 Mult.: 1	Headers	Socket Assembly	7 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Socket (Female)	Gold		3.35 mm (0.132 in)	4455	KK	Board-to-Board, Signal		- 40 C	+ 80 C	Tray
Headers & Wire Housings KK 100 Hdr FrLk Vert 03 Ckt Tin 22-23-2033 Molex 1: S/ 1.32 10,772In Stock	Mfr. Part # 22-23-2033 Mouser Part # 538-22-23-2033	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 03 Ckt Tin Learn More about Molex kk	Datasheet	10,772In Stock	S/ 1.32 S/ 1.12 S/ 0.954 S/ 0.852 View S/ 0.771 S/ 0.751 S/ 0.716 S/ 0.596	Min.: 1 Mult.: 1	Headers	Locking	3 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	7.62 mm (0.3 in)	3.94 mm (0.155 in)	6373	KK	Wire-to-Board, Signal		- 40 C	+ 80 C
Headers & Wire Housings 2.54MM BREAKAWAY Vertical 30 CKT Tin 22-28-4301 Molex 1: S/ 7.43 4,876In Stock	Mfr. Part # 22-28-4301 Mouser Part # 538-22-28-4301	Molex	Headers & Wire Housings 2.54MM BREAKAWAY Vertical 30 CKT Tin Learn More about Molex kk	Datasheet	4,876In Stock	S/ 7.43 S/ 7.40 S/ 6.81 S/ 5.99 View S/ 5.84 S/ 3.73	Min.: 1 Mult.: 1	Headers	Breakaway	30 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
Headers & Wire Housings 3.96mm KK Hdr Vt Pol Pol-W RPin VrA 12Ckt 26-19-2121 Molex 1: S/ 10.16 1,527In Stock	Mfr. Part # 26-19-2121 Mouser Part # 538-26-19-2121	Molex	Headers & Wire Housings 3.96mm KK Hdr Vt Pol Pol-W RPin VrA 12Ckt	Datasheet	1,527In Stock	S/ 10.16 S/ 8.84 S/ 6.58 S/ 6.50 View S/ 6.42 S/ 5.99 S/ 5.57 S/ 5.53 S/ 5.25	Min.: 1 Mult.: 1	Headers	Shrouded	12 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 156 Hdr FrLk RtAn 08 Ckt Tin 26-64-5080 Molex 1: S/ 4.40 5,579In Stock	Mfr. Part # 26-64-5080 Mouser Part # 538-26-64-5080	Molex	Headers & Wire Housings KK 156 Hdr FrLk RtAn 08 Ckt Tin Learn More about Molex kk	Datasheet	5,579In Stock	S/ 4.40 S/ 3.93 S/ 3.88 S/ 3.33 View S/ 3.29 S/ 3.06 S/ 2.93 S/ 2.92 S/ 2.70	Min.: 1 Mult.: 1	Headers	Locking	8 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 SOCKET 22-26AWG BULK 08-55-0106 Molex 1: S/ 1.79 18,159In Stock	Mfr. Part # 08-55-0106 Mouser Part # 538-08-55-0106	Molex	Headers & Wire Housings SOCKET 22-26AWG BULK Learn More about Molex kk	Datasheet	18,159In Stock	S/ 1.79 S/ 1.51 S/ 1.35 S/ 1.28 View S/ 1.01 S/ 0.954 S/ 0.911 S/ 0.825 S/ 0.798	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 6 POS RECEPT .156 R/A PCB TIN 09-48-1064 Molex 1: S/ 4.16 6,961In Stock	Mfr. Part # 09-48-1064 Mouser Part # 538-09-48-1064	Molex	Headers & Wire Housings 6 POS RECEPT .156 R/A PCB TIN Learn More about Molex kk	Datasheet	6,961In Stock	S/ 4.16 S/ 3.66 S/ 3.42 S/ 3.23 View S/ 2.99 S/ 2.69 S/ 2.45 S/ 2.35 S/ 2.19	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 3P .156 SPOX F/L HDR 09-65-2038 Molex 1: S/ 1.05 39,539In Stock	Mfr. Part # 09-65-2038 Mouser Part # 538-09-65-2038	Molex	Headers & Wire Housings 3P .156 SPOX F/L HDR	Datasheet	39,539In Stock	S/ 1.05 S/ 0.915 S/ 0.856 S/ 0.779 View S/ 0.712 S/ 0.677 S/ 0.658 S/ 0.549 S/ 0.522	Min.: 1 Mult.: 1	Headers	Receptacle	3 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 HSG 10P W/LKG RAMP 22-01-2107 Molex 1: S/ 1.17 30,981In Stock	Mfr. Part # 22-01-2107 Mouser Part # 538-22-01-2107	Molex	Headers & Wire Housings HSG 10P W/LKG RAMP Learn More about Molex kk	Datasheet	30,981In Stock	S/ 1.17 S/ 0.985 S/ 0.872 S/ 0.794	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	10 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 2.54MM 10P RA HDR W/ FRCTN LOCK 22-05-7108 Molex 1: S/ 3.50 8,697In Stock	Mfr. Part # 22-05-7108 Mouser Part # 538-22-05-7108	Molex	Headers & Wire Housings 2.54MM 10P RA HDR W/ FRCTN LOCK Learn More about Molex kk	Datasheet	8,697In Stock	S/ 3.50 S/ 2.98 S/ 2.86 S/ 2.76 View S/ 2.51 S/ 2.25 S/ 2.06 S/ 1.93 S/ 1.88	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 2.54MM BREAKAWAY Vertical 30 CKT Tin 22-28-4300 Molex 1: S/ 6.23 6,078In Stock	Mfr. Part # 22-28-4300 Mouser Part # 538-22-28-4300	Molex	Headers & Wire Housings 2.54MM BREAKAWAY Vertical 30 CKT Tin Learn More about Molex kk	Datasheet	6,078In Stock	S/ 6.23 S/ 5.84 S/ 5.61 S/ 4.28 View S/ 4.05 S/ 3.87 S/ 3.76 S/ 3.69 S/ 3.33	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 156 Hdr Assy Flat Flat Bkwy 03 ckt Tin 26-58-0030 Molex 1: S/ 1.36 7,617In Stock	Mfr. Part # 26-58-0030 Mouser Part # 538-26-58-0030	Molex	Headers & Wire Housings KK 156 Hdr Assy Flat Flat Bkwy 03 ckt Tin Learn More about Molex kk	Datasheet	7,617In Stock	S/ 1.36 S/ 1.34 S/ 1.31 S/ 1.27 View S/ 0.961 S/ 0.891 S/ 0.856 S/ 0.829 S/ 0.747	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 17CKT VERT HDR 26-60-4170 Molex 1: S/ 6.07 990In Stock	Mfr. Part # 26-60-4170 Mouser Part # 538-26-60-4170	Molex	Headers & Wire Housings 17CKT VERT HDR Learn More about Molex kk	Datasheet	990In Stock	S/ 6.07 S/ 5.14 S/ 5.02 S/ 4.87 View S/ 4.16 S/ 3.97	Min.: 1 Mult.: 1	Headers	Shrouded	17 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 3.96 MM KK VERT HDR 41791-0833 Molex 1: S/ 4.67 5,936In Stock	Mfr. Part # 41791-0833 Mouser Part # 538-41791-0833	Molex	Headers & Wire Housings 3.96 MM KK VERT HDR Learn More about Molex kk	Datasheet	5,936In Stock	S/ 4.67 S/ 3.97 S/ 3.85 S/ 3.31 View S/ 3.30 S/ 2.88 S/ 2.75 S/ 2.69 S/ 2.20	Min.: 1 Mult.: 1	Headers	Locking	3 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 100 Housing Crimp Pol Ramp 6 Ckt 10-11-2064 Molex 1: S/ 1.05 24,537In Stock	Mfr. Part # 10-11-2064 Mouser Part # 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	S/ 1.05 S/ 0.907 S/ 0.81 S/ 0.771 View S/ 0.689 S/ 0.654 S/ 0.611 S/ 0.607	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 HSG 12P W/LKG RAMP 22-01-2127 Molex 1: S/ 1.52 52,817In Stock	Mfr. Part # 22-01-2127 Mouser Part # 538-22-01-2127	Molex	Headers & Wire Housings HSG 12P W/LKG RAMP Learn More about Molex kk	Datasheet	52,817In Stock	S/ 1.52 S/ 1.33 S/ 1.19 S/ 1.06 S/ 1.02	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
Headers & Wire Housings .100 KK HEADER 22-11-2172 Molex 1: S/ 11.76 1,391In Stock	Mfr. Part # 22-11-2172 Mouser Part # 538-22-11-2172	Molex	Headers & Wire Housings .100 KK HEADER Learn More about Molex kk	Datasheet	1,391In Stock	S/ 11.76 S/ 10.98 S/ 10.59 S/ 10.08 View S/ 9.23 S/ 9.03 S/ 8.95 S/ 8.87 S/ 8.60	Min.: 1 Mult.: 1	Headers	Locking	17 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	Bulk