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 2CKT VERT HDR 50-29-1746 Molex 1: ¥96.3 10,911In Stock	Mfr. Part # 50-29-1746 Mouser Part # 538-50-29-1746	Molex	Headers & Wire Housings 2CKT VERT HDR Learn More about Molex kk	Datasheet	10,911In Stock	¥96.3 ¥83.1 ¥75.9 ¥68.4 View ¥62.6 ¥52.8 ¥49.5 ¥47.2 ¥39	Min.: 1 Mult.: 1	Headers	Shrouded	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.26 mm (0.286 in)	7.34 mm (0.289 in)	6373	KK	Wire-to-Board, Signal		- 40 C	+ 105 C
Headers & Wire Housings KK CAT EAR CRIMP TERMINAL 08-70-0049 Molex 1: ¥31.6 63,430In Stock	Mfr. Part # 08-70-0049 Mouser Part # 538-08-70-0049	Molex	Headers & Wire Housings KK CAT EAR CRIMP TERMINAL	Datasheet	63,430In Stock	¥31.6 ¥27.6 ¥25.1 ¥23.6 View ¥21.4 ¥18.4 ¥17.6 ¥17.4 ¥17.3	Min.: 1 Mult.: 1	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Tin			5159	KK		28 AWG to 22 AWG	- 40 C	+ 105 C	Bulk
Headers & Wire Housings 3 POS PCB RECEPTACLE 09-48-3034 Molex 1: ¥152.8 3,547In Stock	Mfr. Part # 09-48-3034 Mouser Part # 538-09-48-3034	Molex	Headers & Wire Housings 3 POS PCB RECEPTACLE Learn More about Molex kk	Datasheet	3,547In Stock	¥152.8 ¥129.2 ¥109.8 ¥98 View ¥88.7 ¥81.1 ¥76.4	Min.: 1 Mult.: 1	Headers	Receptacle	3 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin		Socket (Female)	Gold			41815	KK			- 40 C	+ 80 C	Tray
Headers & Wire Housings 5.08MM 2P VERT HDR W/POLAR BACKWL 10-08-5021 Molex 1: ¥83.1 15,020In Stock	Mfr. Part # 10-08-5021 Mouser Part # 538-10-08-5021	Molex	Headers & Wire Housings 5.08MM 2P VERT HDR W/POLAR BACKWL Learn More about Molex kk	Datasheet	15,020In Stock	¥83.1 ¥70.3 ¥61.8 ¥54.6 View ¥49 ¥40.2 ¥37.7 ¥36.5 ¥32.7	Min.: 1 Mult.: 1	Headers	Shrouded	2 Position	5.08 mm (0.2 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			2599	KK					Bulk
Headers & Wire Housings 5.08MM 4P VERT HDR W/POLAR BACKWL 10-08-5041 Molex 1: ¥93 12,318In Stock	Mfr. Part # 10-08-5041 Mouser Part # 538-10-08-5041	Molex	Headers & Wire Housings 5.08MM 4P VERT HDR W/POLAR BACKWL Learn More about Molex kk	Datasheet	12,318In Stock	¥93 ¥81.1 ¥74.1 ¥66.9 View ¥61.1 ¥51.5 ¥48.3 ¥46 ¥40.9	Min.: 1 Mult.: 1	Headers	Shrouded	4 Position	5.08 mm (0.2 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			2599	KK					Tray
Headers & Wire Housings KK RPC 156 Hdr FrLk 4Ckt Tin 171813-0104 Molex 1: ¥119.6 7,976In Stock	Mfr. Part # 171813-0104 Mouser Part # 538-171813-0104	Molex	Headers & Wire Housings KK RPC 156 Hdr FrLk 4Ckt Tin Learn More about Molex kk 396 rpc headers	Datasheet	7,976In Stock	¥119.6 ¥103.6 ¥94.8 ¥68.1 View ¥67.6 ¥63.8 ¥60.6 ¥56.5	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)	171813	KK			- 40 C	+ 105 C
Headers & Wire Housings KK Hdr RA 5 Ckt 3.96mm Pitch Sn 171814-0005 Molex 1: ¥96.3 10,339In Stock	Mfr. Part # 171814-0005 Mouser Part # 538-171814-0005	Molex	Headers & Wire Housings KK Hdr RA 5 Ckt 3.96mm Pitch Sn Learn More about Molex kk 396 rpc headers	Datasheet	10,339In Stock	¥96.3 ¥85.4 ¥83.9 ¥75.9 View ¥69.1 ¥65.3 ¥64.6 ¥62 ¥59.8	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	11.33 mm (0.446 in)	2.54 mm (0.1 in)	171814	KK	Wire-to-Board		- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 02 Ckt Tin T&R 171857-3002 Molex 1: ¥94.7 9,557In Stock	Mfr. Part # 171857-3002 Mouser Part # 538-171857-3002	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 02 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	9,557In Stock	Cut Tape ¥94.7 ¥80.4 ¥68.4 ¥58.3 ¥53.8 Reel ¥51	Min.: 1 Mult.: 1 : 3,300	Headers	Locking	2 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 9C TERM HSG 94V-0 22-01-2091 Molex 1: ¥36.5 19,954In Stock	Mfr. Part # 22-01-2091 Mouser Part # 538-22-01-2091	Molex	Headers & Wire Housings 9C TERM HSG 94V-0 Learn More about Molex kk	Datasheet	19,954In Stock	¥36.5 ¥30.4 ¥27.2 ¥26.1 ¥25.9	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	9 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 13 CRT HOUSING 22-01-3137 Molex 1: ¥39.9 24,031In Stock 4,000Expected 11/15/2026	Mfr. Part # 22-01-3137 Mouser Part # 538-22-01-3137	Molex	Headers & Wire Housings 13 CRT HOUSING Learn More about Molex kk	Datasheet	24,031In Stock 4,000Expected 11/15/2026	¥39.9 ¥34.5 ¥30.9 ¥29.4 ¥28.6	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 2.5MM VERT 14P HDR W/FRICTION RAMP SN 22-04-1141 Molex 1: ¥420.2 1,362In Stock	Mfr. Part # 22-04-1141 Mouser Part # 538-22-04-1141	Molex	Headers & Wire Housings 2.5MM VERT 14P HDR W/FRICTION RAMP SN Learn More about Molex mini latch wire to board system	Datasheet	1,362In Stock	¥420.2 ¥367.1 ¥352.1 ¥277.4 View ¥234.2 ¥212.6 ¥210.9	Min.: 1 Mult.: 1	Headers	Shrouded	14 Position	2.5 mm (0.098 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	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 100 Hdr FrLk Vert 3CKT - 2P Voided 22-11-2037 Molex 1: ¥122.9 14,569In Stock	Mfr. Part # 22-11-2037 Mouser Part # 538-22-11-2037	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 3CKT - 2P Voided Learn More about Molex kk	Datasheet	14,569In Stock	¥122.9 ¥106.6 ¥97.5 ¥88 View ¥80.4 ¥66.6 ¥62.5 ¥59.5 ¥54	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 8P VERT HEADER Sn 22-28-4080 Molex 1: ¥69.8 16,957In Stock	Mfr. Part # 22-28-4080 Mouser Part # 538-22-28-4080	Molex	Headers & Wire Housings 8P VERT HEADER Sn Learn More about Molex kk	Datasheet	16,957In Stock	¥69.8 ¥61 ¥60.1 ¥54 View ¥46.3 ¥43.2 ¥34.4 ¥34.2	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 15P VERT HEADER Sn 22-28-4150 Molex 1: ¥154.5 18,875In Stock	Mfr. Part # 22-28-4150 Mouser Part # 538-22-28-4150	Molex	Headers & Wire Housings 15P VERT HEADER Sn Learn More about Molex kk	Datasheet	18,875In Stock	¥154.5 ¥130.1 ¥124.7 ¥113.4 View ¥106.3 ¥95.7 ¥87 ¥81.6 ¥69.1	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 2.54MM BREAKAWAY Vertical 28 CKT Gold 22-28-4284 Molex 1: ¥506.6 2,195In Stock	Mfr. Part # 22-28-4284 Mouser Part # 538-22-28-4284	Molex	Headers & Wire Housings 2.54MM BREAKAWAY Vertical 28 CKT Gold Learn More about Molex kk	Datasheet	2,195In Stock	¥506.6 ¥504.9 ¥493.3 ¥476.7 View ¥471.7 ¥435.2 ¥406.9 Quote	Min.: 1 Mult.: 1	Headers	Breakaway	28 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	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 KK 100 Hdr Assy RA B y RA Bkwy 02 Ckt Tin 22-28-6021 Molex 1: ¥39.9 28,894In Stock	Mfr. Part # 22-28-6021 Mouser Part # 538-22-28-6021	Molex	Headers & Wire Housings KK 100 Hdr Assy RA B y RA Bkwy 02 Ckt Tin Learn More about Molex kk	Datasheet	28,894In Stock	¥39.9 ¥30.6 ¥25.4 ¥22.6 View ¥19.3 ¥14 ¥12.3 ¥12	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 100 Hdr Assy 22-28-6220 Molex 1: ¥234.2 3,126In Stock	Mfr. Part # 22-28-6220 Mouser Part # 538-22-28-6220	Molex	Headers & Wire Housings KK 100 Hdr Assy	Datasheet	3,126In Stock	Cut Tape ¥234.2 ¥199.3 ¥169.4 Reel ¥167.8 ¥151 View ¥137.9 ¥123.9	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 2.54MM BREAKAWAY RA 3 CKT Tin 22-28-8031 Molex 1: ¥44.8 17,281In Stock	Mfr. Part # 22-28-8031 Mouser Part # 538-22-28-8031	Molex	Headers & Wire Housings 2.54MM BREAKAWAY RA 3 CKT Tin Learn More about Molex kk	Datasheet	17,281In Stock	¥44.8 ¥37.5 ¥33.2 ¥28.9 View ¥22.6 ¥21.3 ¥19.9 ¥19.1 ¥18.1	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: ¥38.2 38,910In Stock	Mfr. Part # 26-03-4032 Mouser Part # 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	¥38.2 ¥32.1 ¥28.4 ¥24.6 View ¥21.8 ¥18.1 ¥17.8 ¥16.4 ¥13.6	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 VERT B/A HDR 7P TIN SQUARE PIN 26-48-1071 Molex 1: ¥101.3 5,685In Stock	Mfr. Part # 26-48-1071 Mouser Part # 538-26-48-1071	Molex	Headers & Wire Housings VERT B/A HDR 7P TIN SQUARE PIN Learn More about Molex kk	Datasheet	5,685In Stock	¥101.3 ¥95 ¥93.5 ¥91.5 View ¥88.5 ¥84.9 ¥81.4 ¥78.6 ¥76.1	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: ¥1,699.2 537In Stock	Mfr. Part # 26-48-2245 Mouser Part # 538-26-48-2245	Molex	Headers & Wire Housings 24 POS HEADER Learn More about Molex kk	Datasheet	537In Stock	¥1,699.2 ¥1,531.4 ¥1,481.6 ¥1,400.2 View ¥1,355.4 ¥1,240.8 ¥1,156.1 ¥1,151.1 Quote	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 14P HEADER 26-60-4140 Molex 1: ¥210.9 3,433In Stock	Mfr. Part # 26-60-4140 Mouser Part # 538-26-60-4140	Molex	Headers & Wire Housings 14P HEADER Learn More about Molex kk	Datasheet	3,433In Stock	¥210.9 ¥186 ¥184.4 ¥160.5 View ¥160.3 ¥143.2 ¥136.4 ¥136.2 ¥121.6	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 6 CKT STRAIGHT HDR A DR ASLY MATTE FINISH 36642-0001 Molex 1: ¥217.6 4,389In Stock	Mfr. Part # 36642-0001 Mouser Part # 538-36642-0001	Molex	Headers & Wire Housings 6 CKT STRAIGHT HDR A DR ASLY MATTE FINISH	Datasheet	4,389In Stock	Cut Tape ¥217.6 ¥187.7 ¥181 ¥167.8 Reel ¥121.6 View ¥147.5 ¥136.9 ¥114.9	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 100 PCB Assy Top Assy Top 10 Ckt Tin 38-00-1430 Molex 1: ¥387 3,111In Stock	Mfr. Part # 38-00-1430 Mouser Part # 538-38-00-1430	Molex	Headers & Wire Housings KK 100 PCB Assy Top Assy Top 10 Ckt Tin Learn More about Molex kk	Datasheet	3,111In Stock	¥387 ¥257.5 ¥247.5 ¥209.3 View ¥207.6 ¥192.7 ¥181	Min.: 1 Mult.: 1	Headers	Socket Assembly	10 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 KK 156 PCB Bottom 4Ckt No Ramp 41815-0329 Molex 1: ¥112.9 200In Stock	Mfr. Part # 41815-0329 Mouser Part # 538-41815-0329	Molex	Headers & Wire Housings KK 156 PCB Bottom 4Ckt No Ramp	Datasheet	200In Stock	¥112.9 ¥98.5 ¥90 ¥81.2 View ¥74.2 ¥61.5 ¥52.7 ¥50 ¥49.2	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