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M12 B-Code Circular Metric Connectors

Amphenol LTW M12 B-Code Circular Metric Connectors offer 2 to 8 pins and feature a screw-thread mating style with complete 360° shielding. Compliant with IEC 61076-2-101, these connectors ensure industry-wide connector compatibility. Key features include a vibration-proof, corrosion-resistant design and a waterproof IP67/IP68/IP69K protection rating. Amphenol LTW M12 B-Code Circular Metric Connectors are suitable for wet and harsh environments, such as surveillance systems, mass rapid transit/railways, industrial automation, and broadband wireless access.

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Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, PROFIBUS, Metal, 4A, 02 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 2000mm, IP68 / IP69K MSBS-02BMMM-SL8M02 Amphenol LTW 1: $22.81 30In Stock	Mfr. Part # MSBS-02BMMM-SL8M02 Mouser Part # 523-MSBS02BMMMSL8M02	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, PROFIBUS, Metal, 4A, 02 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 2000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	30In Stock	$22.81 $20.98 $18.54 $17.30 View $15.57 $15.00 $14.43 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 3000mm, IP68 / IP69K M12B05ML-12BFL-SD003 Amphenol LTW 1: $20.34 1In Stock	Mfr. Part # M12B05ML-12BFL-SD003 Mouser Part # 523-2B05ML12BFLSD003	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 3000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	1In Stock	$20.34 $16.64 $16.47 $14.34 View $13.95 $13.53 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 3000mm, IP68 / IP69K M12B05ML-12BML-SD003 Amphenol LTW 1: $20.33 6In Stock	Mfr. Part # M12B05ML-12BML-SD003 Mouser Part # 523-2B05ML12BMLSD003	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 3000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	6In Stock	$20.33 $16.35 $14.85 $14.11 View $13.63 $13.13 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 5000mm, IP68 / IP69K MSBS05ML-SBSFL-SB005 Amphenol LTW 1: $53.24 8In Stock	Mfr. Part # MSBS05ML-SBSFL-SB005 Mouser Part # 523-BS05MLSBSFLSB005	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 5000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	8In Stock	$53.24 $45.10 $40.28 $39.15 View $37.76 Quote	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 03 pins, Female Connector, Female Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated M12B-03BFFA-SL8001 Amphenol LTW 1: $9.19 8In Stock	Mfr. Part # M12B-03BFFA-SL8001 Mouser Part # 523-M12B03BFFASL8001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 03 pins, Female Connector, Female Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	8In Stock	$9.19 $7.81 $7.23 $6.97 View $6.64 $6.22 $5.92 $5.64 $5.57	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 03 pins, Male Connector, Male Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated M12B-03BMMA-SL8001 Amphenol LTW 1: $9.10 4In Stock	Mfr. Part # M12B-03BMMA-SL8001 Mouser Part # 523-M12B03BMMASL8001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 03 pins, Male Connector, Male Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	4In Stock	$9.10 $7.57 $7.01 $6.76 View $6.43 $6.03 $5.74 $5.35 $5.34	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Screw-in, Field Installable, F4.0 - F8.0mm, IP67 Mated M12B-05BFFB-SL7001 Amphenol LTW 1: $12.45 9In Stock	Mfr. Part # M12B-05BFFB-SL7001 Mouser Part # 523-M12B05BFFBSL7001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Screw-in, Field Installable, F4.0 - F8.0mm, IP67 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	$12.45 $11.97 $10.84 $10.56 View $9.82 $9.05 $8.45 $7.75 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K M12B-05BFFM-SL8D01 Amphenol LTW 1: $10.25 2In Stock	Mfr. Part # M12B-05BFFM-SL8D01 Mouser Part # 523-M12B05BFFMSL8D01	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	2In Stock	$10.25 $8.71 $8.06 $7.77 View $7.40 $6.94 $6.54 $6.09 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 10000mm, IP68 / IP69K M12B-05BFFM-SL8D10 Amphenol LTW 1: $26.75 4In Stock 20Expected 11/9/2026	Mfr. Part # M12B-05BFFM-SL8D10 Mouser Part # 523-M12B05BFFMSL8D10	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 10000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	4In Stock 20Expected 11/9/2026	$26.75 $23.22 $22.75 $19.54 View $19.18 $18.81 $18.31 Quote	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated M12B-05BMMA-SL8001 Amphenol LTW 1: $9.48 7In Stock	Mfr. Part # M12B-05BMMA-SL8001 Mouser Part # 523-M12B05BMMASL8001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	7In Stock	$9.48 $8.05 $7.45 $7.18 View $6.82 $6.29 $5.90 $5.52 $5.46	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables Circular Metric Connector MPronto-12 (M12 Push Pull), B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Overmolded, Length 2000mm, IP68 Mated M12B-05BMMM-PL8D02 Amphenol LTW 1: $12.43 9In Stock	Mfr. Part # M12B-05BMMM-PL8D02 Mouser Part # 523-M12B05BMMMPL8D02	Amphenol LTW	Sensor Cables / Actuator Cables Circular Metric Connector MPronto-12 (M12 Push Pull), B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Overmolded, Length 2000mm, IP68 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	$12.43 $10.56 $9.90 $9.43 View $8.98 $8.41 $8.01 $7.63	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K M12B05FL-12BMR-SDA05 Amphenol LTW 1: $11.21 8In Stock	Mfr. Part # M12B05FL-12BMR-SDA05 Mouser Part # 523-M12B05FLBMRSDA05	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	8In Stock	$11.21 $10.55 $9.65 $9.23 View $8.92 $8.51 $8.12 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K M12B05ML-12BFR-SDA05 Amphenol LTW 1: $15.33 4In Stock	Mfr. Part # M12B05ML-12BFR-SDA05 Mouser Part # 523-M12B05MLBFRSDA05	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	4In Stock	$15.33 $11.23 $10.53 $10.03 View $9.55 $8.95 $8.52 $8.12	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K M12B05ML-12BML-SDA05 Amphenol LTW 1: $12.72 11In Stock	Mfr. Part # M12B05ML-12BML-SDA05 Mouser Part # 523-M12B05MLBMLSDA05	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	11In Stock	$12.72 $10.13 $9.15 $8.66 View $8.35 $7.96 $7.63 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, Screw Thread, Crimp, Receptacle With Cable/Wire, Length 150mm, IP68 / IP69K M12B-05PFFC-SF8B15 Amphenol LTW 1: $10.18 6In Stock	Mfr. Part # M12B-05PFFC-SF8B15 Mouser Part # 523-M12B05PFFCSF8B15	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, Screw Thread, Crimp, Receptacle With Cable/Wire, Length 150mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	6In Stock	$10.18 $8.64 $8.00 $7.71 View $7.35 $6.82 $6.40 $6.00 $5.93	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, Screw Thread, Crimp, Receptacle With Cable/Wire, Length 150mm, IP68 / IP69K M12B-05PFFC-SH8C15 Amphenol LTW 1: $10.49 6In Stock	Mfr. Part # M12B-05PFFC-SH8C15 Mouser Part # 523-M12B05PFFCSH8C15	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, Screw Thread, Crimp, Receptacle With Cable/Wire, Length 150mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	6In Stock	$10.49 $8.91 $8.25 $7.96 View $7.58 $7.05 $6.61 $6.09 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, Screw Thread, Crimp, Receptacle With Cable/Wire, Length 500mm, IP68 / IP69K M12B-05PFFC-SH8C50 Amphenol LTW 1: $11.46 1In Stock	Mfr. Part # M12B-05PFFC-SH8C50 Mouser Part # 523-M12B05PFFCSH8C50	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, Screw Thread, Crimp, Receptacle With Cable/Wire, Length 500mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	1In Stock	$11.46 $10.32 $9.72 $9.47 View $9.23 $8.23 $7.73 $6.50	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, M12*1.0, Screw Thread, PCB 90 , Receptacle, Front Fastened, IP67 Mated M12B-05PFFR-SF7003 Amphenol LTW 1: $10.64 30In Stock	Mfr. Part # M12B-05PFFR-SF7003 Mouser Part # 523-M12B05PFFRSF7003	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, M12*1.0, Screw Thread, PCB 90 , Receptacle, Front Fastened, IP67 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	30In Stock	$10.64 $9.23 $8.30 $7.91 View $7.45 $6.89 $6.48 $6.06 $6.00	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M Series Sensor Connector, M12, B Code, Plastic, 4A, 05 pins, Male Connector, Male Contact, DIP 90 M12B-05PMMR-EE0001 Amphenol LTW 1: $7.19 61In Stock	Mfr. Part # M12B-05PMMR-EE0001 Mouser Part # 523-M12B05PMMREE0001	Amphenol LTW	Sensor Cables / Actuator Cables M Series Sensor Connector, M12, B Code, Plastic, 4A, 05 pins, Male Connector, Male Contact, DIP 90 Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	61In Stock	$7.19 $6.10 $5.08 $4.84 View $4.61 $4.40	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, PG9, Screw Thread, Solder, Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K M12B-05PMMS-SF8001 Amphenol LTW 1: $7.80 1In Stock	Mfr. Part # M12B-05PMMS-SF8001 Mouser Part # 523-M12B05PMMSSF8001	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, PG9, Screw Thread, Solder, Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	1In Stock	$7.80 $6.34 $5.94 $5.60 View $5.21 $4.84 $4.43 $4.09 $4.01	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K MSBP05ML-SBPFL-SDA05 Amphenol LTW 1: $12.63 5In Stock	Mfr. Part # MSBP05ML-SBPFL-SDA05 Mouser Part # 523-MB05MLBFLSDA05	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	5In Stock	$12.63 $10.73 $10.05 $9.57 View $9.12 $8.55 $8.14 $7.75	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Female Connector, Female Contact, Right Angle, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K MSBP-05BFFM-SR8A01 Amphenol LTW 1: $10.40 9In Stock	Mfr. Part # MSBP-05BFFM-SR8A01 Mouser Part # 523-MSBP05BFFMSR8A01	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Female Connector, Female Contact, Right Angle, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	$10.40 $9.36 $8.82 $8.59 View $8.37 $7.46 $7.01 $5.94	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Female Connector, Female Contact, Right Angle-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 1000mm, IP68 / IP69K MSBP05FR-SBPFR-SD001 Amphenol LTW 1: $17.09 1In Stock	Mfr. Part # MSBP05FR-SBPFR-SD001 Mouser Part # 523-MSBP05FRSBPFRSD1	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Female Connector, Female Contact, Right Angle-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	1In Stock	$17.09 $14.52 $13.61 $12.72 View $11.91 $11.34 $10.94 $10.62 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, PROFIBUS, Metal, 4A, 02 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K MSBS-02BMMM-SL8M01 Amphenol LTW 1: $17.25 3In Stock	Mfr. Part # MSBS-02BMMM-SL8M01 Mouser Part # 523-MSBS02BMMMSL8M01	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, PROFIBUS, Metal, 4A, 02 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	3In Stock	$17.25 $14.87 $13.94 $13.27 View $12.13 $11.64 $11.07 $10.77 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, PROFIBUS, Metal, 4A, 02 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 5000mm, IP68 / IP69K MSBS-02BMMM-SL8M05 Amphenol LTW 1: $37.98 2In Stock	Mfr. Part # MSBS-02BMMM-SL8M05 Mouser Part # 523-MSBS02BMMMSL8M05	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, PROFIBUS, Metal, 4A, 02 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 5000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	2In Stock	$37.98 $32.28 $30.26 $27.73 View $26.49 $25.47 Quote	Min.: 1 Mult.: 1