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Deciphering Metric, NPT, and PG thread geometries for Steel Wire Armoured (SWA) and Aluminium Wire Armoured (AWA) cables.
In hazardous industrial deployments and high-vibration heavy mechanical sectors, selecting the correct armoured cable gland size is paramount to ensuring structural grounding, environmental isolation, and long-term electrical safety. Armoured cable glands—specifically designed for SWA (Steel Wire Armoured), AWA (Aluminium Wire Armoured), and GSWB (Galvanised Steel Wire Braid) cables—rely on double-compression or specialized single-compression designs to secure both the inner sheath bed and the outer protective armor jacket. A failure to accurately coordinate the thread sizing with the physical cable diameter can jeopardize the IP rating and disrupt the earth continuity loop.
Typically, when evaluating sizes, electrical design engineers must cross-reference three critical variables: the inner bed diameter, the outer sheath overall diameter, and the armor wire diameter. In Chinese factories, high-precision manufacturing systems format these dimensions according to three primary thread patterns to satisfy global project requirements:
Conforming to EN 60423 and ISO standards, ranging from M12 to M110. They are widely utilized across European, Chinese, and Middle Eastern industrial and infrastructure layouts.
National Pipe Taper thread configurations (ANSI/ASME B1.20.1). Predominantly utilized in North American markets, petrochemical plants, and oil rigs requiring self-sealing joints.
Panzergewinde (DIN 40430) standard sizes, commonly found in German machinery systems and retrofitting operations across the wind energy and mechanical sectors.
Standard dimensional mapping for brass and stainless steel double compression armoured cable glands (SWA applications).
| Gland Reference Size | Metric Entry Thread (D1) | Min/Max Inner Sheath Bed (mm) | Min/Max Outer Sheath (mm) | Armor Wire Dia. Range (mm) | Recommended Installation Torque (Nm) |
|---|---|---|---|---|---|
| 20S/16 | M20 x 1.5 | 8.0 - 11.5 | 11.5 - 16.0 | 0.9 / 1.25 | 25.0 |
| 20S | M20 x 1.5 | 11.0 - 14.0 | 14.5 - 20.5 | 0.9 / 1.25 | 30.0 |
| 20 | M20 x 1.5 | 12.5 - 16.5 | 16.5 - 22.0 | 1.25 / 1.6 | 35.0 |
| 25 | M25 x 1.5 | 16.0 - 20.5 | 22.0 - 27.5 | 1.25 / 1.6 | 45.0 |
| 32 | M32 x 1.5 | 20.0 - 26.5 | 26.5 - 34.5 | 1.6 / 2.0 | 60.0 |
| 40 | M40 x 1.5 | 26.5 - 32.5 | 33.0 - 41.0 | 1.6 / 2.0 | 75.0 |
| 50S | M50 x 1.5 | 32.5 - 38.0 | 39.5 - 47.0 | 2.0 / 2.5 | 90.0 |
| 50 | M50 x 1.5 | 38.0 - 44.0 | 46.5 - 53.0 | 2.0 / 2.5 | 110.0 |
| 63S | M63 x 1.5 | 44.0 - 50.0 | 52.5 - 59.0 | 2.5 | 130.0 |
| 63 | M63 x 1.5 | 50.0 - 56.0 | 58.5 - 65.5 | 2.5 | 150.0 |
| 75S | M75 x 1.5 | 56.0 - 62.0 | 65.0 - 72.0 | 2.5 / 3.15 | 180.0 |
| 75 | M75 x 1.5 | 62.0 - 68.0 | 71.5 - 78.5 | 2.5 / 3.15 | 200.0 |
Founded in 2006, Zhejiang Hongxiang Connector Co., Ltd. is rooted in Yueqing, Zhejiang — a national hub for precision electrical manufacturing in China. After nearly two decades of dedicated development, the company has evolved into a large modern industrial connectivity solutions provider integrating R&D and design, large-scale intelligent manufacturing, global sales, and one-stop services. It stands as a benchmark enterprise of considerable scale and influence in China’s cable gland and connector industry, and a key player among national high-tech enterprises.
Boasting a modern intelligent manufacturing industrial park, the company operates a standardized production workshop of over 10,000 square meters, equipped with multiple high-precision automated production lines, CNC machining centers, and a full-process quality control laboratory, establishing an industry-leading large-scale manufacturing system. With a core team of more than 300 professionals — over 30% of whom are R&D and quality management personnel — its annual production capacity exceeds 80 million units. The company is fully capable of handling large-volume orders, urgent custom projects, and long-term strategic supply partnerships for domestic and international clients, ranking among the industry’s top tier in both production capacity and delivery efficiency.
Its core product portfolio includes metal cable glands, nylon cable glands, waterproof cable glands, explosion-proof connectors, conduit fittings, and various customized connecting accessories. These products serve high-end sectors such as industrial electrical equipment, new energy equipment, rail transit, shipbuilding and heavy industry, construction machinery, military supporting facilities, and communication & industrial control. Adhering to stringent manufacturing standards and uncompromising quality requirements, the company has obtained a series of internationally recognized certifications, including ISO9001, IATF16949 automotive quality management system, CE, UL, ATEX explosion-proof certification, RoHS, and IP68 high-protection rating. Its core technologies and product performance have reached international advanced levels, with nearly 100 invention and utility model patents to its name, continuously driving technological upgrading across the industry.
As a leading manufacturer in the sector, Hongxiang Connector has maintained long-term in-depth partnerships with numerous Fortune Global 500 corporations and leading listed enterprises in China, and has actively participated in numerous national key projects and major equipment development initiatives. Renowned for their outstanding reliability, the company’s products are highly acclaimed by global customers and exported to more than 30 countries and regions across Europe, America, Southeast Asia, and the Middle East.
With the vision of "building a world-leading industrial connectivity brand", Hongxiang Connector remains committed to quality, technological innovation, and scalable advantages. Upholding international standards, corporate responsibility, and one-stop service capabilities, it delivers safe, stable, and efficient connectivity solutions to customers worldwide, solidifying its position as a core strategic supplier in the industrial connectivity sector.
Whether you’re a beginner or an experienced practitioner, a high-quality yoga attire set can provide you with optimal comfort and flexibility, allowing you to reap the maximum benefits from every practice. (Hongxiang industrial connectivity products maintain matching strict engineering certifications including ISO9001, IATF16949, CE, UL, and ATEX).
Operating more than 200 high-end manufacturing devices and automated machining centers to ensure absolute dimension tolerances.
The products are applied in the new energy vehicle industry, rail transit, wind power generation, robotics technology, etc.
Cable glands are critical for new energy vehicles (NEVs), serving as essential components to manage and protect cables in high-voltage systems, battery packs, motor controllers, charging interfaces, and other core electrical units. Engineered to withstand extreme temperatures, vibration, moisture, and chemical exposure, they ensure reliable sealing, prevent dust/water ingress, and maintain insulation integrity to avoid electrical hazards. By securing and routing power, signal, and communication cables, they enhance the safety, stability, durability, and performance consistency of the vehicle’s electrical system. Compliant with automotive industry standards, high-quality cable glands help NEVs meet strict safety and reliability requirements, making them indispensable for electric cars, hybrid vehicles, and other new energy mobility solutions.
Cable glands are essential for robotics, managing and protecting power, signal, and data cables in industrial robots, cobots, AMRs, and more. Adapted to dynamic movements, harsh industrial environments (dust, coolant, mechanical stress), they prevent tangling, abrasion, and disconnection while ensuring IP68-rated sealing. By safeguarding electrical connections and reducing cable wear, they enhance robotic operational stability, precision, and service life. Compatible with various cable sizes and compliant with IEC/UL standards, they are foundational for reliable robotic systems.
Cable glands are vital for onshore/offshore wind power systems (turbines, substations, tower bases), protecting power/control/signal cables. Engineered to resist salt fog, extreme temps (-52℃ to 90℃), vibration, and UV, they offer IP68 sealing, explosion-proof performance, and EMC shielding. Made of durable EPDM rubber or 316L stainless steel or brass , they prevent cable abrasion/displacement and electrical hazards, ensuring long-term operational stability and safety.
Cable glands are key protective components in rail transit systems, widely used in rolling stock, substations, tunnels, and equipment rooms of metro, high-speed rail, and intercity rail. They secure and protect power, control, and signal cables. Adapted to harsh operating conditions, they feature an IP68 protection rating, resisting moisture, dust, and rodent damage, while withstanding extreme temperatures from -40℃ to 90℃ and continuous vibration. They are offering explosion-proof and sealing performance to prevent cable abrasion, signal interference, and fire spread. Their modular design supports future capacity expansion, extends the service life of cables and equipment, and ensures the long-term safe and stable operation of rail transit systems.
Why global EPC contractors and system integrators source from localized industrial clusters in Zhejiang, China.
The concentration of metal and polymer raw material suppliers in Yueqing, Zhejiang, provides a competitive advantage for cable gland manufacturing. By sourcing raw materials like marine-grade 316L stainless steel, high-purity H59/H62 brass, and UV-stabilized polyamide 66 directly from regional producers, Zhejiang Hongxiang Connector Co., Ltd. eliminates long-distance transport costs and logistics delays. Integration with nearby metal plating workshops and custom gasket extrusion plants facilitates rapid production cycles, allowing high-volume custom orders to be fulfilled within short timeframes.
Automated manufacturing systems, including computerized numeric control (CNC) lathes, multi-station stamping presses, and robotic sealing assemblers, reduce variable labor costs and improve dimensional consistency. Multi-spindle automated threading machines process custom pitch tolerances (such as NPT, metric, and PG threads) in a single operation. This infrastructure allows the plant to produce over 80 million pieces annually, enabling direct-from-factory pricing that supports large-scale global infrastructure projects.
Modern electrical layouts require protection against electromagnetic interference (EMI) and radio frequency interference (RFI), particularly in high-power automation environments like robotic cells and hybrid powertrains. Next-generation armoured glands feature integrated 360-degree contact springs that ground the braided or tape shield directly to the metallic housing. This configuration provides a low-impedance path to the ground plane, protecting signal integrity from transient current spikes.
Material science developments are expanding the thermal operating range of cable glands. Advanced elastomeric seals made from fluorosilicone or ethylene propylene diene monomer (EPDM) rubbers maintain elasticity and sealing characteristics under conditions ranging from arctic cold (-52°C) to high-temperature machinery compartments (+150°C). Concurrently, manufacturers are developing smart cable glands equipped with embedded thermal and pressure sensors to monitor connection health and signal impending insulation failures in hazardous areas.
Managing global distribution requires adhering to diverse regulatory frameworks. Hongxiang Connector maintains compliance with international standards, including European ATEX and global IECEx for explosive atmospheres, UL514B for electrical conduits in North America, and CE for general industrial safety. This multi-standard compliance simplifies the design process for engineers working on projects destined for multiple jurisdictions.
In addition to standard catalog offerings, the factory provides dedicated engineering support to design custom entry threads, non-standard clamping dimensions, and specialized materials (such as nickel-plated brass or silicon bronze) for marine and chemical plants. Rapid prototyping and detailed 3D CAD modeling facilitate quick verification of custom sizes, helping prevent installation issues on-site.
Expert technical insights regarding size selection, installation practices, and compliance standards.
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Hongxiang
