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M8, M12, & 7/8'' Circular Connectors

HARTING M8, M12, and 7/8'' Circular Connectors feature straight and angled variants with IDC or crimp connectors for field assembly or a range of pre-assembled overmolded connectors. The M8 and M12 circular connectors are mainly used for the cabling of sensors and actuators. The 7/8'' circular connectors are primarily used for DeviceNet applications and power supplies. The range of these HARTING M8, M12, and 7/8'' connectors are further enhanced with a wide selection of solutions for the device side, such as panel feed-through, PCB adapters, and gender changers.

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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.
Circular Metric Connectors M12-A 4PIN FML STRT 0.5M RECEPT 21033176405 HARTING 1: £12.31 170In Stock Restricted Availability 318Expected 24/11/2026	Mfr. Part No. 21033176405 Mouser Part No 617-21033176405	HARTING	Circular Metric Connectors M12-A 4PIN FML STRT 0.5M RECEPT Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	170In Stock 318Expected 24/11/2026	£12.31 £10.66 £10.11 £9.08 View £8.08 £7.56 £7.55	Min.: 1 Mult.: 1 Restricted Availability
Circular Metric Connectors M12-A 8PIN FML STRT 0.5M RECEPT 21033176805 HARTING 1: £20.94 132In Stock Restricted Availability	Mfr. Part No. 21033176805 Mouser Part No 617-21033176805	HARTING	Circular Metric Connectors M12-A 8PIN FML STRT 0.5M RECEPT Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	132In Stock	£20.94 £17.81 £16.70 £15.90 View £15.13 £14.19 £13.92	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M8 4PIN MALE STRT SINGLE END 1.0M PVC 21348000481010 HARTING 1: £10.48 404In Stock Restricted Availability	Mfr. Part No. 21348000481010 Mouser Part No 617-21348000481010	HARTING	Sensor Cables / Actuator Cables M8 4PIN MALE STRT SINGLE END 1.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	404In Stock	£10.48 £8.91 £8.35 £8.16 View £7.86 £6.76 £6.53	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M8 4PIN M/F STRT DOUBLE END 1.0M PVC 21348081481010 HARTING 1: £13.38 121In Stock Restricted Availability	Mfr. Part No. 21348081481010 Mouser Part No 617-21348081481010	HARTING	Sensor Cables / Actuator Cables M8 4PIN M/F STRT DOUBLE END 1.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	121In Stock	£13.38 £11.92 £11.17 £10.63 View £10.13 £9.49 £9.04	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12-A 8PIN MALE STRT SINGLE END 1.0M PVC 21348400882010 HARTING 1: £16.17 145In Stock Restricted Availability	Mfr. Part No. 21348400882010 Mouser Part No 617-21348400882010	HARTING	Sensor Cables / Actuator Cables M12-A 8PIN MALE STRT SINGLE END 1.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	145In Stock	£16.17 £13.75 £12.89 £12.27 View £11.93 £10.96 £10.50	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12-A 8PIN MALE STRT SINGLE END 5.0M PVC 21348400882050 HARTING 1: £24.59 103In Stock Restricted Availability	Mfr. Part No. 21348400882050 Mouser Part No 617-21348400882050	HARTING	Sensor Cables / Actuator Cables M12-A 8PIN MALE STRT SINGLE END 5.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	103In Stock	£24.59 £20.89 £19.59 £18.65 £16.65	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12A 12PIN 12POLE MALE STRT 1.0M PVC 21348400C79010 HARTING 1: £24.64 204In Stock Restricted Availability 62On Order	Mfr. Part No. 21348400C79010 Mouser Part No 617-21348400C79010	HARTING	Sensor Cables / Actuator Cables M12A 12PIN 12POLE MALE STRT 1.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	204In Stock 62On Order On Order Ship Dates Mfr. No: 21348400C79010 Stock: 204 Can Dispatch Immediately On Order: 1 Pending 61 Expected 09/11/2026 Factory Lead Time: 5 Weeks	£24.64 £23.03 £21.61 £20.99 £19.17	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12A 12PIN 12POLE MALE STRT 5.0M PVC 21348400C79050 HARTING 1: £35.37 211In Stock Restricted Availability 922On Order	Mfr. Part No. 21348400C79050 Mouser Part No 617-21348400C79050	HARTING	Sensor Cables / Actuator Cables M12A 12PIN 12POLE MALE STRT 5.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	211In Stock 922On Order On Order Ship Dates Mfr. No: 21348400C79050 Stock: 211 Can Dispatch Immediately On Order: 196 Expected 05/11/2026 308 Expected 17/11/2026 418 TBD Factory Lead Time: 6 Weeks	£35.37 £30.84 £28.27 £27.15 View £26.06 £25.05 Quote	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12A 12PIN 12POLE DBL M/F STRT5.0M PVC 21348485C79050 HARTING 1: £43.53 108In Stock Restricted Availability 210On Order	Mfr. Part No. 21348485C79050 Mouser Part No 617-21348485C79050	HARTING	Sensor Cables / Actuator Cables M12A 12PIN 12POLE DBL M/F STRT5.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	108In Stock 210On Order On Order Ship Dates Mfr. No: 21348485C79050 Stock: 108 Can Dispatch Immediately On Order: 101 Expected 10/11/2026 109 TBD Factory Lead Time: 6 Weeks	£43.53 £37.01 £34.69 £33.80 Quote Quote	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12-A 8PIN FML STRT SINGLE END 1.0M PVC 21348500882010 HARTING 1: £15.29 260In Stock Restricted Availability	Mfr. Part No. 21348500882010 Mouser Part No 617-21348500882010	HARTING	Sensor Cables / Actuator Cables M12-A 8PIN FML STRT SINGLE END 1.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	260In Stock	£15.29 £12.99 £12.38 £11.36	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12-A 8PIN FML STRT SINGLE END 5.0M PVC 21348500882050 HARTING 1: £24.81 234In Stock Restricted Availability	Mfr. Part No. 21348500882050 Mouser Part No 617-21348500882050	HARTING	Sensor Cables / Actuator Cables M12-A 8PIN FML STRT SINGLE END 5.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	234In Stock	£24.81 £22.17 £20.78 £19.79 £17.70	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M8 3PIN M/F STRT DOUBLE END 10.0M PUR 21348081388100 HARTING 1: £25.40 57In Stock Restricted Availability 100On Order	Mfr. Part No. 21348081388100 Mouser Part No 617-21348081388100	HARTING	Sensor Cables / Actuator Cables M8 3PIN M/F STRT DOUBLE END 10.0M PUR Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	57In Stock 100On Order	£25.40 £23.75 £22.58 £20.03 View £18.36 £17.21	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12-A 8PIN M/F ST DOUBLE END 1.0M PVC 21348485882010 HARTING 1: £20.49 299In Stock Restricted Availability	Mfr. Part No. 21348485882010 Mouser Part No 617-21348485882010	HARTING	Sensor Cables / Actuator Cables M12-A 8PIN M/F ST DOUBLE END 1.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	299In Stock	£20.49 £17.42 £16.33 £16.01 View £14.94 £14.57	Min.: 1 Mult.: 1 Restricted Availability
Ethernet Cables / Networking Cables M12-A 8PIN M/F ST DOUBLE END 2.0M PVC 21348485882020 HARTING 1: £21.91 59In Stock Restricted Availability 60Expected 10/11/2026	Mfr. Part No. 21348485882020 Mouser Part No 617-21348485882020	HARTING	Ethernet Cables / Networking Cables M12-A 8PIN M/F ST DOUBLE END 2.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	59In Stock 60Expected 10/11/2026	£21.91 £18.62 £17.27 £16.88	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12-A 8PIN M/F ST DOUBLE END 5.0M PVC 21348485882050 HARTING 1: £26.25 370In Stock Restricted Availability	Mfr. Part No. 21348485882050 Mouser Part No 617-21348485882050	HARTING	Sensor Cables / Actuator Cables M12-A 8PIN M/F ST DOUBLE END 5.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	370In Stock	£26.25 £22.31 £20.92 £20.91 View £20.36 £19.58	Min.: 1 Mult.: 1 Restricted Availability
Ethernet Cables / Networking Cables M12-A 8PIN M/F ST DOUBLE END 10.0M PVC 21348485882100 HARTING 1: £33.30 86In Stock Restricted Availability	Mfr. Part No. 21348485882100 Mouser Part No 617-21348485882100	HARTING	Ethernet Cables / Networking Cables M12-A 8PIN M/F ST DOUBLE END 10.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	86In Stock	£33.30 £28.29 £26.63	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M12A 12PIN 12POLE DBL M/F STR10.0M PVC 21348485C79100 HARTING 1: £56.14 160In Stock Restricted Availability	Mfr. Part No. 21348485C79100 Mouser Part No 617-21348485C79100	HARTING	Sensor Cables / Actuator Cables M12A 12PIN 12POLE DBL M/F STR10.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	160In Stock	£56.14 £47.72 £44.47 £42.99 View £41.97 Quote	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M8 3PIN FEMALE STRT SINGL END 0.5mRECEPT 21023576305 HARTING 1: £10.76 80In Stock Restricted Availability	Mfr. Part No. 21023576305 Mouser Part No 617-21023576305	HARTING	Sensor Cables / Actuator Cables M8 3PIN FEMALE STRT SINGL END 0.5mRECEPT Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	80In Stock	£10.76 £9.58 £8.98 £8.14 View £7.63 £7.26 £7.07	Min.: 1 Mult.: 1 Restricted Availability
Circular Metric Connectors M8 4PIN FEMALE STRT SINGL END 0.5mRECEPT 21023576405 HARTING 1: £12.26 50In Stock Restricted Availability 27Expected 09/11/2026	Mfr. Part No. 21023576405 Mouser Part No 617-21023576405	HARTING	Circular Metric Connectors M8 4PIN FEMALE STRT SINGL END 0.5mRECEPT Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	50In Stock 27Expected 09/11/2026	£12.26 £11.03 £10.81 £10.65 View £9.19 £8.62 £8.21	Min.: 1 Mult.: 1 Restricted Availability
Circular Metric Connectors M12-A 12POLE RECEPT FML STRT SNG END .5M 21033532C00 HARTING 1: £27.19 7In Stock Restricted Availability 10Expected 24/11/2026	Mfr. Part No. 21033532C00 Mouser Part No 617-21033532C00	HARTING	Circular Metric Connectors M12-A 12POLE RECEPT FML STRT SNG END .5M Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	7In Stock 10Expected 24/11/2026	£27.19 £26.15 £21.60 £20.99	Min.: 1 Mult.: 1 Restricted Availability
Circular Metric Connectors M12-D 4PIN RCPT 0.5M FML STRT SNGL END 21033752400 HARTING 1: £13.84 3In Stock Restricted Availability	Mfr. Part No. 21033752400 Mouser Part No 617-21033752400	HARTING	Circular Metric Connectors M12-D 4PIN RCPT 0.5M FML STRT SNGL END Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	3In Stock	£13.84 £12.41 £11.63 £11.08 View £10.54 £9.88 £9.41	Min.: 1 Mult.: 1 Restricted Availability
Standard Circular Connector 7/8" 4PIN FML STRT RECEPTACLE 21043162501 HARTING 1: £27.40 3In Stock Restricted Availability	Mfr. Part No. 21043162501 Mouser Part No 617-21043162501	HARTING	Standard Circular Connector 7/8" 4PIN FML STRT RECEPTACLE Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	3In Stock	£27.40 £23.29 £21.83 £20.79 View £19.80 £18.67	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M8 3PIN MALE STRT SINGLE END 5.0m PVC 21348000380050 HARTING 1: £13.33 18In Stock Restricted Availability	Mfr. Part No. 21348000380050 Mouser Part No 617-21348000380050	HARTING	Sensor Cables / Actuator Cables M8 3PIN MALE STRT SINGLE END 5.0m PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	18In Stock	£13.33 £12.86 £10.62 £10.11 View £9.63 £9.03 £8.60	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M8 4PIN M/F STRT DOUBLE END 5.0M PVC 21348081481050 HARTING 1: £15.88 29In Stock Restricted Availability 33On Order	Mfr. Part No. 21348081481050 Mouser Part No 617-21348081481050	HARTING	Sensor Cables / Actuator Cables M8 4PIN M/F STRT DOUBLE END 5.0M PVC Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	29In Stock 33On Order	£15.88 £13.49 £12.17	Min.: 1 Mult.: 1 Restricted Availability
Sensor Cables / Actuator Cables M8 4PIN M/F STRT DOUBLE END 0.5M PUR 21348081489005 HARTING 1: £14.88 1In Stock Restricted Availability	Mfr. Part No. 21348081489005 Mouser Part No 617-21348081489005	HARTING	Sensor Cables / Actuator Cables M8 4PIN M/F STRT DOUBLE END 0.5M PUR Learn More about HARTING m8 m12 78 connectors Product available only to OEM/EMS and design business customers. Product is not shipped to consumers in the EU or the UK	Datasheet	1In Stock	£14.88 £12.66 £11.86 £11.30 View £10.76 £10.08 £9.60	Min.: 1 Mult.: 1 Restricted Availability