High-Quality Threaded M4/M5/M6 Inductive Proximity Sensors

Name: High-Quality Threaded M4/M5/M6 Inductive Proximity Sensors
Brand: DAIDISIKE
SKU: high-quality-threaded-m4-m5-m6-inductive-proximity-sensors
Availability: InStock

Threaded M4/M5/M6 inductive proximity sensors with selectable NPN/PNP output and NO/NC logic for tight spaces.

High-Quality Threaded M4/M5/M6 Inductive Proximity Sensors - dimensional drawing

🔍 Click to enlarge · 1/9

Technical Specifications

Sensing method	Inductive
Thread / Body length	M4: M4x0.5, 25mm; M5: M5, 25mm; M6: M6, 35mm
Output type	NPN / PNP, NO / NC (selectable)
Sensing distance	M4: 0.6 / 0.8 / 1.0mm; M5: 0.8 / 1.0 / 1.2 / 1.5mm; M6: 0.8 / 1.0 / 1.2 / 1.5mm
Wiring	3-wire (DC)

Overview

This is a threaded-body inductive proximity sensor series in three thread sizes -- M4x0.5 (25mm body), M5 (25mm body), and M6 (35mm body). Each size is available with NPN or PNP transistor output, in normally-open (NO) or normally-closed (NC) configuration, and with multiple sensing-distance options per size (from 0.6mm on M4 up to 1.5mm on M5/M6). All models use a 3-wire DC connection. Because the body is threaded, the sensor mounts with two nuts and can be finely adjusted for sensing gap -- useful where panel space is tight and a compact, non-contact metal-detecting switch is needed.

It is intended for machine builders, panel integrators, and OEMs who need a small-diameter, screw-mount proximity sensor for detecting the position or presence of metal parts on compact equipment, where a standard M8/M12 sensor is physically too large to fit. The series spans 44 catalog part numbers across the three thread sizes, giving buyers NPN/PNP output and NO/NC logic choices at every sensing-distance option.

Features & Benefits

Three Thread Sizes in One Family (M4/M5/M6)

Lets buyers standardize on one series while covering different mounting-hole sizes on their equipment, instead of sourcing three unrelated product lines.

Selectable NPN or PNP Output

Matches the sensor to the buyer's existing PLC or control-panel input type (sinking or sourcing) without redesigning the wiring.

Selectable NO or NC Logic

Lets the same physical sensor size be wired for either a "part present" trigger or a "part absent" trigger, matching the customer's control logic.

Multiple Sensing-distance Options per Size

M4 offers 0.6/0.8/1.0mm; M5 and M6 offer 0.8/1.0/1.2/1.5mm, giving the buyer a distance close to their actual gap instead of one fixed value that may be too short or too long.

Threaded Body for Fine Position Adjustment

The M4x0.5, M5, and M6 threads allow the sensor to be screwed in and locked with nuts, so installers can fine-tune the sensing gap after mounting rather than being fixed to a single mounting depth.

Compact Diameter for Space-limited Mounting

M4 and M5 sizes suit installation points where an M8 or M12 sensor's body diameter would not physically fit.

3-wire DC Connection with Published Wiring Diagram

Standard 3-wire DC hookup with a factory wiring diagram provided, simplifying panel-side installation.

Applications

Small-part Presence Detection on Compact Assembly Equipment — The small-diameter threaded body fits into compact mounting points where M8 or M12 sensors will not fit, detecting whether a small metal part is present.

Position Confirmation on Miniature Indexing or Feed Mechanisms — Multiple sensing-distance options (0.6-1.5mm) match small-gap position-confirmation requirements on miniature indexing or feed mechanisms.

Limit/End-position Sensing in Compact Machine Modules — The threaded body mounts with lock nuts and allows gap adjustment, suiting limit-position sensing points in space-limited machine modules.

Metal Part Counting on Small-scale Automation Lines — Selectable NO/NC logic lets the sensor connect to different counting control logic on small-scale automation lines.

Control-panel Retrofit Where Mounting Depth Is Fixed — The threaded body can be fine-tuned with two lock nuts to match an existing mounting-hole depth in control-panel retrofit projects.

OEM Machine Builders Standardizing on One Sensor Family Across Product Lines — A single family covers M4/M5/M6 thread sizes with NPN/PNP and NO/NC combinations, reducing the number of part types OEM machine builders need to stock across product lines.

Replacement/Spare-part Sourcing for Existing M4/M5/M6 Threaded Sensor Installations — The clear model-number rule (N/P + 1/2 + sensing-distance digits) makes it straightforward to cross-reference and source replacements for existing M4/M5/M6 threaded sensor installations.

Models & Ordering Information

M4 Thread (M4x0.5, 25mm body)

M4N10.6M4P10.6M4N20.6M4P20.6M4N10.8M4P10.8M4N20.8M4P20.8M4N110M4P110M4N210M4P210

Sensing distance 0.6/0.8/1.0mm. N=NPN, P=PNP; 1=NO, 2=NC.

M5 Thread (M5, 25mm body)

M5N10.8M5P10.8M5N20.8M5P20.8M5N110M5P110M5N210M5P210M5N112M5P112M5N212M5P212M5N115M5P115M5N215M5P215

Sensing distance 0.8/1.0/1.2/1.5mm. N=NPN, P=PNP; 1=NO, 2=NC.

M6 Thread (M6, 35mm body)

M6N10.8M6P10.8M6N20.8M6P20.8M6N110M6P110M6N210M6P210M6N112M6P112M6N212M6P212M6N115M6P115M6N215M6P215

Sensing distance 0.8/1.0/1.2/1.5mm. N=NPN, P=PNP; 1=NO, 2=NC.

How to Select

Match the mounting-hole thread size: M4x0.5 (25mm body) for M4 holes, M5 (25mm body) for M5 holes, M6 (35mm body, longer than M4/M5) for M6 holes.
Pick a sensing-distance option close to the actual installation gap: M4 offers 0.6mm, 0.8mm, or 1.0mm; M5 and M6 offer 0.8mm, 1.0mm, 1.2mm, or 1.5mm.
Choose N (NPN) for a sinking PLC input, or P (PNP) for a sourcing PLC input.
Choose logic suffix 1 (NO) if the output should activate when the metal target is detected, or suffix 2 (NC) if the output should activate when the target is absent.
Read the model number as: thread size + output letter (N/P) + logic digit (1/2) + sensing distance, e.g. M4N10.6 = M4 thread, NPN, NO, 0.6mm sensing distance; M5P212 = M5 thread, PNP, NC, 1.2mm sensing distance; M6N115 = M6 thread, NPN, NO, 1.5mm sensing distance.

📘 Need the full method? How to Choose a Proximity Sensor · NPN vs PNP Sensor Outputs Explained

When NOT to specify the High-Quality — and what to use instead

Detecting plastic, wood, liquid, or other non-metallic parts

Why not: This is an inductive-detection family (Sensing method: Inductive); no rating for non-metallic targets is listed.

Use instead: A capacitive proximity sensor series, which can detect non-metallic and liquid targets.

Application needs more than 1.5mm sensing distance

Why not: The largest sensing distance offered in this family is 1.5mm (M5/M6); the M4 size tops out at 1.0mm.

Use instead: DAIDISIKE's economy M8/M12/M18/M30 series (up to 15mm) or the M12 short-body series for longer sensing distances.

Need to know whether the sensor can be embedded flush in surrounding metal

Why not: This series' spec sheet does not document flush versus non-flush mounting behavior at all -- mount type is not part of this family's model-numbering rule.

Use instead: Confirm mounting/shielding behavior with the factory before embedding in metal, or use the economy M4/M5/M6 series, which does document flush-mount status for its M5/M6 sizes.

Harsh washdown, dusty, or wide-temperature-swing environment

Why not: No IP/ingress-protection rating or operating-temperature range is published for this series.

Use instead: The D6.5 series or the economy M8/M12/M18/M30 series, both of which carry a confirmed IP67 rating and -25°C to +70°C range.

Fast-moving target or high-speed counting application

Why not: No response time or switching-frequency figure is published for this series.

Use instead: The D6.5 series (0.1-0.2ms response) or the JM-series connector sensors, which do publish response-time specs, if line speed is a design driver.

Machine-guard interlocking or any personnel-safety function

Why not: No functional-safety or safety-rated certification is listed for this series.

Use instead: A dedicated safety-rated interlock switch or safety light curtain for guarding duty.

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

Operating/supply voltage figure (only "3-wire DC" wiring is stated; no voltage range is published)
IP / ingress-protection rating
Operating temperature range
Response time / switching frequency
Flush versus non-flush mounting behavior
Short-circuit or overload protection
Housing material
Cable length and cable type

Frequently Asked Questions

What is the sensing distance range of the M4/M5/M6 threaded proximity sensor series?

M4 models offer 0.6mm, 0.8mm, or 1.0mm sensing distance. M5 and M6 models offer 0.8mm, 1.0mm, 1.2mm, or 1.5mm sensing distance.

What output types are available?

Every size in this series is available with NPN or PNP transistor output, and with normally-open (NO) or normally-closed (NC) logic -- four output combinations per sensing-distance option.

What is the thread and body length for each size?

M4 is M4x0.5 thread with a 25mm body length. M5 is M5 thread with a 25mm body length. M6 is M6 thread with a 35mm body length.

How is this sensor wired?

All models in this series use a 3-wire DC connection. A wiring diagram is provided by the factory for panel-side installation reference.

How do I read the model number?

The letter after the thread size indicates output type -- N for NPN, P for PNP. The digit that follows indicates logic -- 1 for normally-open (NO), 2 for normally-closed (NC). The trailing number indicates sensing distance, e.g. "0.6" = 0.6mm, "10" = 1.0mm, "12" = 1.2mm, "15" = 1.5mm.

Can the sensing gap be adjusted after installation?

Yes. Because the sensor body is threaded (M4x0.5 / M5 / M6), it is mounted with lock nuts and can be screwed in or out to fine-tune the sensing gap before final locking.

Does this series carry certification documents?

Certification documents are available on request.