The M8 Waterproof Plug is a compact, metric-threaded (M8×1.0) circular connector standardized under IEC 61076-2-104, designed for space-constrained industrial sensor and actuator wiring applications where M12 connectors are too bulky. With an approximately 8 mm coupling nut OD and 25-30 mm body length, it delivers IP67 sealing (IP68 optional) when mated and carries 3 A at 60 V DC on common 3/4-pin A-coded configurations.

• 8 mm maximum OD – fits micro sensor heads and compact spaces where M12 won't clear
• IP67 standard / IP68 optional (mated) – protects against dust, oil mist, coolant spray, and immersion
• 3 A / 60 V DC A-code compatibility – covers 24 VDC 3-wire sensors, IO-Link, PROFIBUS, and compact Ethernet nodes
• Gold-plated brass/phosphor-bronze contacts with ≤5 mΩ resistance and ≥500 mating cycles
• Field-wireable or molded options – screw/IDC accepts 0.14-0.34 mm² (26-22 AWG) wire
• Coding prevents mis-mating – A (sensor/power), B (PROFIBUS), D (Ethernet) keyways are mechanically exclusive
• 33% smaller than M12 with lower BOM cost – ideal for high-density sensor banks

• Coupling: M8 × 1.0 threaded, knurled PA or Ni-brass nut
• Pins: 3 / 4 / 5 / 6 / 8 (3/4-pin A dominates sensor market)
• Coding: A (power+sensor), B (5-pin PROFIBUS), D (4-pin 100 Mbps Ethernet)
• Orientation: straight / 90° right-angle; gender male (pin) / female (socket)
• Termination: solder cup, screw-clamp, IDC, or molded-with-cable (22-24 AWG leads)
• Gland: rear grommet Φ3-6 mm (4-6 / 6-8 dual set)
• Shell: PA66+GF (black/grey) or Ni-plated Zn/brass with 360° shield (D-code)

• vs M12 plug: 33% smaller OD (8 mm vs 12 mm), lower cost, sufficient for every 24 VDC sensor
• vs JST/PH micro header: Threaded M8 lock + O-ring provides IP67 protection and vibration resistance
• vs pre-molded only: Field-wireable M8 allows cutting exact lengths on prototype benches and repairs
• vs heat-shrink splice: Coded keying prevents miswiring, reusable, 500-cycle rated, no cold-joint rejects

• Factory automation: proximity/photoelectric sensors, inductive probes, pressure transmitters
• Industrial Ethernet edges: D-code 4-pin 100 Mbps PROFINET/EtherNet/IP
• Robotics & AGV: robot wrist/finger sensors, cobot end-effector signal, AGV skin micro-switches
• Outdoor & transport: streetlight controller sensor port, solar combiner aux, railway telemetry
• Packaging & labeling: conveyor photoeyes, label printer sensor taps, safety light curtain links
• Medical & instruments: portable diagnostic probes, lab automation grippers, cart battery status lines
• Valve island coils and IO-Link masters
• Compact vision heads and remote I/O systems