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 (JPY) 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 100 Hdr FrLk Vert 04 Ckt Tin 22-23-2043 Molex 1: ¥91.4 10,711In Stock	Mfr. Part # 22-23-2043 Mouser Part # 538-22-23-2043	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 04 Ckt Tin Learn More about Molex kk	Datasheet	10,711In Stock	¥91.4 ¥77.6 ¥68.3 ¥60.3 View ¥54.1 ¥44.3 ¥41.5 ¥40.4 ¥38.2	Min.: 1 Mult.: 1	Headers	Locking	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	6.6 mm (0.26 in)	3.68 mm (0.145 in)	6373	KK	Wire-to-Board, Signal		- 40 C	+ 80 C
Headers & Wire Housings KK 100 Hdr FrLk Vert FrLk Vert 03 Ckt Tin 22-23-6032 Molex 1: ¥66.4 13,193In Stock	Mfr. Part # 22-23-6032 Mouser Part # 538-22-23-6032	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert FrLk Vert 03 Ckt Tin Learn More about Molex kk	Datasheet	13,193In Stock	¥66.4 ¥56.6 ¥50.2 ¥43.5 View ¥38.5 ¥32.1 ¥30.1 ¥29.1 ¥25.6	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)	14.73 mm (0.58 in)	6373	KK	Wire-to-Board, Signal		- 40 C	+ 80 C
Headers & Wire Housings BKWY HDR STR 4P tin 22-28-4041 Molex 1: ¥56.5 21,217In Stock	Mfr. Part # 22-28-4041 Mouser Part # 538-22-28-4041	Molex	Headers & Wire Housings BKWY HDR STR 4P tin Learn More about Molex kk	Datasheet	21,217In Stock	¥56.5 ¥47.2 ¥42.9 ¥36.2 View ¥32.1 ¥27.4 ¥25.7 ¥22.9 ¥21.1	Min.: 1 Mult.: 1	Headers	Breakaway	4 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 2.54MM BREAKAWAY Vertical 8 CKT Tin 22-28-4081 Molex 1: ¥93 16,253In Stock	Mfr. Part # 22-28-4081 Mouser Part # 538-22-28-4081	Molex	Headers & Wire Housings 2.54MM BREAKAWAY Vertical 8 CKT Tin Learn More about Molex kk	Datasheet	16,253In Stock	¥93 ¥81.1 ¥76.2 ¥68.8 View ¥62.6 ¥44 ¥42.4 ¥41.4 ¥40	Min.: 1 Mult.: 1	Headers	Breakaway	8 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 16CKT HEADER 22-28-4163 Molex 1: ¥172.7 14,325In Stock	Mfr. Part # 22-28-4163 Mouser Part # 538-22-28-4163	Molex	Headers & Wire Housings 16CKT HEADER Learn More about Molex kk	Datasheet	14,325In Stock	¥172.7 ¥151.5 ¥149.3 ¥139.5 View ¥135.9 ¥124.1 ¥111.8 ¥104.5 ¥89.5	Min.: 1 Mult.: 1	Headers	Breakaway	16 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 100 Hdr Assy Bkwy Bkwy 02 Ckt 30 SGold 22-28-5026 Molex 1: ¥109.6 6,104In Stock	Mfr. Part # 22-28-5026 Mouser Part # 538-22-28-5026	Molex	Headers & Wire Housings KK 100 Hdr Assy Bkwy Bkwy 02 Ckt 30 SGold Learn More about Molex kk	Datasheet	6,104In Stock	¥109.6 ¥95.2 ¥87 ¥78.6 View ¥65.1 ¥54.8 ¥52.8 ¥49.3 ¥48.8	Min.: 1 Mult.: 1	Headers	Breakaway	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	6.09 mm (0.24 in)	3.43 mm (0.135 in)	42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings 2.54MM BREAKAWAY RA 7 CKT Gold 22-28-8072 Molex 1: ¥117.9 10,026In Stock	Mfr. Part # 22-28-8072 Mouser Part # 538-22-28-8072	Molex	Headers & Wire Housings 2.54MM BREAKAWAY RA 7 CKT Gold Learn More about Molex kk	Datasheet	10,026In Stock	¥117.9 ¥101 ¥99 ¥90.2 View ¥86.4 ¥78.9 ¥70.4 ¥70.3	Min.: 1 Mult.: 1	Headers	Breakaway	7 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					Bulk
Headers & Wire Housings KK 156 Crimp Housing Crimp Housing 02 Ckt 26-03-3021 Molex 1: ¥16.6 52,992In Stock	Mfr. Part # 26-03-3021 Mouser Part # 538-26-03-3021	Molex	Headers & Wire Housings KK 156 Crimp Housing Crimp Housing 02 Ckt Learn More about Molex kk	Datasheet	52,992In Stock	¥16.6 ¥10.8 ¥9.6 ¥9.1 View ¥8.3 ¥7.8 ¥7.3 ¥7.1 ¥7	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	2 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 VERT B/A HDR 6P TIN SQUARE PIN 26-48-1061 Molex 1: ¥142.8 7,513In Stock	Mfr. Part # 26-48-1061 Mouser Part # 538-26-48-1061	Molex	Headers & Wire Housings VERT B/A HDR 6P TIN SQUARE PIN Learn More about Molex kk	Datasheet	7,513In Stock	¥142.8 ¥123.9 ¥113.3 ¥96 View ¥92.4 ¥79.4 ¥74.4 ¥66.1 ¥65.6	Min.: 1 Mult.: 1	Headers	Breakaway	6 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			41661	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings R/A B/A HDR 6P TIN FRICTION LOCK 26-48-1066 Molex 1: ¥111.3 3,963In Stock	Mfr. Part # 26-48-1066 Mouser Part # 538-26-48-1066	Molex	Headers & Wire Housings R/A B/A HDR 6P TIN FRICTION LOCK Learn More about Molex kk	Datasheet	3,963In Stock	¥111.3 ¥99.8 ¥98.3 ¥91.7 View ¥87.9 ¥80.6 ¥76.2 ¥75.9	Min.: 1 Mult.: 1	Headers	Breakaway	6 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 R/A PCB HDR 7P TIN FRICTION LOCK 26-60-5070 Molex 1: ¥137.9 4,899In Stock	Mfr. Part # 26-60-5070 Mouser Part # 538-26-60-5070	Molex	Headers & Wire Housings R/A PCB HDR 7P TIN FRICTION LOCK Learn More about Molex kk	Datasheet	4,899In Stock	¥137.9 ¥118.3 ¥114.9 ¥97.2 View ¥94.5 ¥92.2 ¥91.9 ¥79.6 ¥74.2	Min.: 1 Mult.: 1	Headers	Locking	7 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin			41792	KK					Bulk
Headers & Wire Housings KK 100 PCB Assy Top Assy Top 04 Ckt Tin 38-00-1424 Molex 1: ¥171.1 4,268In Stock	Mfr. Part # 38-00-1424 Mouser Part # 538-38-00-1424	Molex	Headers & Wire Housings KK 100 PCB Assy Top Assy Top 04 Ckt Tin Learn More about Molex kk	Datasheet	4,268In Stock	¥171.1 ¥144.2 ¥135.9 ¥115.3 View ¥104.6 ¥97.5 ¥91.2 ¥91 ¥89.2	Min.: 1 Mult.: 1	Headers	Socket Assembly	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Socket (Female)	Tin		3.3 mm (0.13 in)	4455	KK	Board-to-Board, Signal		- 40 C	+ 105 C	Tray
Headers & Wire Housings 20CKT CRMP TRM HOUSE 09-50-3201 Molex 1: ¥76.4 8,177In Stock	Mfr. Part # 09-50-3201 Mouser Part # 538-09-50-3201	Molex	Headers & Wire Housings 20CKT CRMP TRM HOUSE Learn More about Molex kk	Datasheet	8,177In Stock	¥76.4 ¥74.7 ¥37.5	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
Headers & Wire Housings 100 KK Term Crp/Pol Rmp 94V-0 12Ckt 10-11-2124 Molex 1: ¥94.7 11,110In Stock	Mfr. Part # 10-11-2124 Mouser Part # 538-10-11-2124	Molex	Headers & Wire Housings 100 KK Term Crp/Pol Rmp 94V-0 12Ckt Learn More about Molex kk	Datasheet	11,110In Stock	¥94.7 ¥82.1 ¥75.1 ¥67.8 View ¥61.8 ¥52 ¥48.7 ¥46.5 ¥42.9	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	12 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp	Straight	Socket (Female)				7880	KK
Headers & Wire Housings 18P CRIMP RAMP HSNG 10-11-2183 Molex 1: ¥88 6,701In Stock	Mfr. Part # 10-11-2183 Mouser Part # 538-10-11-2183	Molex	Headers & Wire Housings 18P CRIMP RAMP HSNG Learn More about Molex kk	Datasheet	6,701In Stock	¥88 ¥74.4 ¥66.4 ¥63.3 View ¥56.5 ¥53.7 ¥46.2	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	18 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp	Straight	Socket (Female)				7880	KK High Pressure					Bulk
Headers & Wire Housings KK Hdr Vrt 6 Ckt 3.96mm Pitch Sn 171813-0006 Molex 1: ¥136.2 5,771In Stock	Mfr. Part # 171813-0006 Mouser Part # 538-171813-0006	Molex	Headers & Wire Housings KK Hdr Vrt 6 Ckt 3.96mm Pitch Sn Learn More about Molex kk 396 rpc headers	Datasheet	5,771In Stock	¥136.2 ¥115.3 ¥98 ¥87.5 View ¥79.7 ¥77.6 ¥73.9 ¥70.4	Min.: 1 Mult.: 1	Headers	Locking	6 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	11.38 mm (0.448 in)	2.37 mm (0.093 in)	171813	KK	Wire-to-Board		- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK Hdr Vrt 5 Ckt 2.54mm Pitch 15um Au 171856-1005 Molex 1: ¥166.1 2,765In Stock	Mfr. Part # 171856-1005 Mouser Part # 538-171856-1005	Molex	Headers & Wire Housings KK Hdr Vrt 5 Ckt 2.54mm Pitch 15um Au Learn More about Molex kk 254 rpc headers	Datasheet	2,765In Stock	¥166.1 ¥145.2 ¥142.7 ¥131.7 View ¥126.7 ¥117.3 ¥110.5 ¥108.3 ¥105.1	Min.: 1 Mult.: 1	Headers	Locking	5 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.44 mm (0.293 in)	2.34 mm (0.092 in)	171856	KK	Wire-to-Board		- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 04 Ckt Tin T&R 171856-3004 Molex 1: ¥154.5 4,568In Stock	Mfr. Part # 171856-3004 Mouser Part # 538-171856-3004	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 04 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	4,568In Stock	Cut Tape ¥154.5 ¥130.6 ¥125.2 ¥120.8 Reel ¥112.6 View ¥108.6 ¥103.3 ¥82.4	Min.: 1 Mult.: 1 : 150	Headers	Locking	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	7.44 mm (0.293 in)	2.34 mm (0.092 in)	171856	KK	Wire-to-Board		- 40 C	+ 105 C	Reel, Cut Tape
Headers & Wire Housings 8 CKT TERM HOUSING 22-01-2081 Molex 1: ¥58.1 26,286In Stock	Mfr. Part # 22-01-2081 Mouser Part # 538-22-01-2081	Molex	Headers & Wire Housings 8 CKT TERM HOUSING Learn More about Molex kk	Datasheet	26,286In Stock	¥58.1 ¥50.7 ¥43.2 ¥41 View ¥38.5 ¥34.5 ¥33.2 ¥32.7 ¥32.2	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 6 CKT R/A F/L HDR 22-05-7068 Molex 1: ¥104.6 19,838In Stock	Mfr. Part # 22-05-7068 Mouser Part # 538-22-05-7068	Molex	Headers & Wire Housings 6 CKT R/A F/L HDR Learn More about Molex kk	Datasheet	19,838In Stock	¥104.6 ¥89 ¥81.4 ¥73.4 View ¥67.1 ¥56.3 ¥52.8 ¥50.5 ¥46.5	Min.: 1 Mult.: 1	Headers	Locking	6 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin		3.5 mm (0.138 in)	7395	KK	Wire-to-Board, Signal	22 AWG	- 40 C	+ 105 C	Bulk
Headers & Wire Housings VERT PCB HDR 5P GOLD PLATING 22-10-2051 Molex 1: ¥186 3,798In Stock	Mfr. Part # 22-10-2051 Mouser Part # 538-22-10-2051	Molex	Headers & Wire Housings VERT PCB HDR 5P GOLD PLATING Learn More about Molex kk	Datasheet	3,798In Stock	¥186 ¥167.8 ¥164.6 ¥143.5 View ¥141.5 ¥132.7 ¥129.9 ¥129.7 ¥122.9	Min.: 1 Mult.: 1	Headers	Pin Strip	5 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold			4030	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings 8P BOTTOM ENTRY 22-17-2082 Molex 1: ¥775.7 1,136In Stock	Mfr. Part # 22-17-2082 Mouser Part # 538-22-17-2082	Molex	Headers & Wire Housings 8P BOTTOM ENTRY Learn More about Molex kk	Datasheet	1,136In Stock	¥775.7 ¥659.4 ¥561.4 ¥500 View ¥458.4 ¥446.8 Quote	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)	Gold			4455	KK					Tray
Headers & Wire Housings 2.54MM BREAKAWAY Vertical 5 CKT Tin 22-28-4051 Molex 1: ¥66.4 17,760In Stock	Mfr. Part # 22-28-4051 Mouser Part # 538-22-28-4051	Molex	Headers & Wire Housings 2.54MM BREAKAWAY Vertical 5 CKT Tin Learn More about Molex kk	Datasheet	17,760In Stock	¥66.4 ¥56.6 ¥49.8 ¥44 View ¥39.5 ¥32.4 ¥30.4 ¥29.6 ¥27.6	Min.: 1 Mult.: 1	Headers	Breakaway	5 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 BKWY HDR STR 5P tin 22-28-4052 Molex 1: ¥64.8 11,794In Stock	Mfr. Part # 22-28-4052 Mouser Part # 538-22-28-4052	Molex	Headers & Wire Housings BKWY HDR STR 5P tin Learn More about Molex kk	Datasheet	11,794In Stock	¥64.8 ¥43.9 ¥37.4 ¥33.4 View ¥30.9 ¥29.2 ¥27.9 ¥24.7	Min.: 1 Mult.: 1	Headers	Breakaway	5 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 2.54MM BREAKAWAY Vertical 12 CKT Gold 22-28-4123 Molex 1: ¥159.5 12,990In Stock	Mfr. Part # 22-28-4123 Mouser Part # 538-22-28-4123	Molex	Headers & Wire Housings 2.54MM BREAKAWAY Vertical 12 CKT Gold Learn More about Molex kk	Datasheet	12,990In Stock	¥159.5 ¥138.7 ¥134.5 ¥123.9 View ¥119.4 ¥111 ¥104 ¥95.2	Min.: 1 Mult.: 1	Headers	Breakaway	12 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	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