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The stability of an electrical connection often determines the overall reliability of equipment. When you encounter a nylon cable connector labeled M16x1.5 or PG16, have you ever wondered what these numbers actually mean? More importantly, how do differences like large pitch vs. small pitch impact real-world applications?
Today, we’ll break down these key parameters to help you make more informed and accurate choices.
The key specifications of a cable connector lie in its thread type and cable entry size.
Let’s take two common examples: M16×1.5 and PG16.
M-Type (Metric Thread) – M16×1.5
Summary: This is a metric-thread connector with a 16 mm diameter and 1.5 mm pitch.
PG-Type (Panzergewinde / German Thread) – PG16
Summary: This is a PG-thread connector with a PG16 specification, a fixed pitch of 1.5 mm, and an approximate major diameter of 16.6 mm.
Important Note
PG threads have standardized, fixed pitches:
As such, pitch values are typically omitted from PG markings. When you see PG16, it implies a 1.5 mm pitch by default.
Thread pitch plays a crucial role in determining a connector’s sealing performance, mechanical stability, and ease of use in different scenarios. Commonly, a 1.5 mm pitch is categorized as small pitch, while 2.0 mm or above is considered large pitch, especially on larger-diameter connectors.
Enhanced Sealing Performance
With more thread crests per unit length, small-pitch threads create a denser and more continuous sealing path. When paired with sealing rings or sealing nuts, they offer superior protection against dust, moisture, and oil. This makes them ideal for harsh environments requiring high ingress protection (e.g., IP68/IP69).
Precision and Stability
Finer threads enable more accurate tightening and torque control, ensuring a stable and secure connection. This helps maintain consistent contact pressure, especially in delicate or vibration-sensitive systems.
Better Vibration Resistance
Under proper locking conditions, fine threads can offer improved resistance to loosening caused by minor vibrations.
Faster Installation and Removal
A larger pitch means more linear movement per turn, allowing for quicker thread engagement and disengagement. This is particularly useful in applications requiring frequent assembly or large-volume installations.
Greater Mechanical Strength
Larger threads often have deeper or broader profiles, which can deliver higher axial load capacity and better resistance to mechanical stress — especially in connectors with large diameters.
Reduced Risk of Jamming
The wider spacing between threads can help prevent binding or clogging due to dirt, debris, or minor thread deformation.
Precision instruments, sensors, control cabinets, outdoor electronics, food processing and medical equipment, and any use case demanding high sealing performance.
Heavy-duty machinery, industrial power cabinets, distribution boxes, temporary wiring setups, and installations that prioritize speed and robustness.
Clear Identification
Each connector is clearly marked with its thread type—M-type (e.g., M16×1.5) or PG-type (e.g., PG16)—enabling precise matching with device interfaces for error-free installation.
Superior Protection Performance
Crafted from premium, high-strength nylon, our connectors offer exceptional resistance to corrosion, impact, and electrical insulation breakdown. Paired with high-grade sealing rings, they easily achieve protection levels up to IP67, IP68, and IP69, making them ideal for harsh industrial environments.
Wide Range of Specifications
We offer a comprehensive selection to meet diverse wiring needs:
Pitch Flexibility
Choose from different thread pitches to suit your specific application—fine pitch (e.g., M16×1.5) for enhanced sealing, or coarse pitch (e.g., M90×2.0) for faster installation and removal.
Rigorous Quality Assurance
All products conform to international electrical standards and undergo strict quality control, ensuring long-term reliability and durability.
Confirm the Device Interface
First, check whether your device’s housing or mounting plate uses M-type or PG-type threads. Identify the exact specification—e.g., M20×1.5 or PG13.5—to ensure compatibility.
Measure Cable Diameter
Determine the maximum outer diameter of the cable to be inserted. Choose a connector with an inner clamping range larger than the cable diameter to ensure proper fit and sealing.
Assess Environmental Conditions
For maximum dust and water protection, opt for small-pitch connectors (e.g., 1.5 mm), which provide tighter sealing.
For quick installation or scenarios requiring greater mechanical strength, especially in larger sizes, consider large-pitch connectors (e.g., 2.0 mm).
Choose the Right Material
Nylon connectors are ideal for most general-purpose applications, offering excellent insulation, corrosion resistance, lightweight, and cost-efficiency.
In high-temperature or chemically aggressive environments, consider metal connectors for enhanced durability.
Don’t Let Connector Selection Confuse You
Understanding the difference between M-type and PG-type threads, and knowing when to use fine or coarse pitch, are key to ensuring safe, reliable, and efficient cable connections.
Visit our website now to browse the full range of M-type and PG-type nylon cable connectors. Discover the ideal solution that combines high-level protection with easy installation.
Hoonsun–Professional Connections, Reliable Protection.
