M20 Cable Gland Manufacturer — Bulk Supply, OEM & Factory Direct
Your trusted M20 cable gland supplier — straight from our factory
If you’re sourcing M20 cable glands at scale, you’re in the right place. At Difvan, we manufacture and export M20 cable glands direct from our factory — so you get consistent quality, factory-direct pricing, and the flexibility your business actually needs.
Whether you’re a distributor, wholesaler, OEM builder, or panel manufacturer, our M20 glands are built to protect and seal cables reliably across industrial, commercial, and infrastructure applications. The metric M20 × 1.5 thread is one of the most widely used cable entry sizes in the world, and we keep deep stock so your orders ship on time — every time.
Browse our full range below, or contact our sales team at difvan for a bulk quote and lead time today.
What is an M20 cable gland?
An M20 cable gland is a cable entry fitting with a metric M20 × 1.5 mm thread — a 20 mm nominal outer thread diameter with 1.5 mm pitch. It’s one of the most universally used gland sizes for electrical enclosures, control panels, and junction boxes worldwide.
When you install an M20 gland, it does three important things for you: it seals the cable entry against dust and moisture, it mechanically grips the cable jacket to provide strain relief, and it maintains the IP rating of your enclosure. That’s a lot of reliable protection in one compact fitting.
You’ll find M20 cable glands installed wherever cables need to pass cleanly and safely through a panel wall — from factory automation equipment to outdoor telecom enclosures. It’s the go-to size for 6–12 mm cables, making it a staple for distributors and OEM builders alike.
M20 cable gland size — in mm and inches
One of the most common questions we get from buyers is: what cable size does an M20 gland actually fit? Here’s your complete size reference, including the M20 cable gland size in inches for markets working in imperial measurements.
Parameter | Min (mm) | Max (mm) | Min (in) | Max (in) | Notes |
Thread diameter | M20 | — | ≈ 0.787″ | — | Nominal thread OD |
Thread pitch | 1.5 mm | — | ≈ 0.059″ | — | Standard metric pitch |
Panel knockout | 20.5 mm | — | ≈ 0.807″ | — | Drill/punch hole size |
Cable OD (standard) | 6 mm | 12 mm | 0.236″ | 0.472″ | Standard grip range |
Cable OD (wide entry) | 5 mm | 14 mm | 0.197″ | 0.551″ | Wide-entry models |
Gland body length | ~28 mm | ~35 mm | ≈ 1.10″ | ≈ 1.38″ | Varies by model |
Locknut (A/F) | 24 mm | — | ≈ 0.945″ | — | Width across flats |
The highlighted row shows the cable jacket OD range your M20 gland will accept. Always measure your cable’s outer jacket diameter before ordering — this is the most common sizing mistake we help buyers avoid. If you’re not sure, send us your cable spec and we’ll confirm the correct fit for you — or browse our full cable gland range.
Our M20 cable gland range
We manufacture M20 glands in multiple materials and configurations to suit your application and budget. Here’s what’s available for your wholesale or OEM order:
Our brass M20 cable glands are built for strength, conductivity, and corrosion resistance in demanding environments like control panels and machinery.
- Thread: M20 × 1.5 mm
- Material: Nickel-plated or natural brass
- IP Rating: IP65 / IP68
- Cable OD: 6–12 mm (up to 14 mm)
- Seal: NBR or EPDM
Available for bulk supply with stable lead times.
These nylon PA66 cable glands offer a lightweight, cost-effective solution with strong corrosion and UV resistance for outdoor and industrial use.
- Material: Halogen-free Nylon PA66
- IP Rating: IP65 / IP68
- UV Resistant for outdoor use
- Colors: Black and grey
Ideal for high-volume OEM applications.
M20 waterproof cable gland
Our IP68 M20 waterproof cable glands are designed for wet and outdoor environments, ensuring reliable sealing under continuous exposure to water.
- IP Rating: IP68 (1 m / 24 hrs)
- Seal: Double compression
- Materials: Brass or Nylon PA66
- Use: Outdoor and washdown areas
Suitable for bulk waterproof applications.
These M20 glands feature a built-in strain relief design that secures cables and prevents pull-out in dynamic environments.
- Design: Cord grip mechanism
- Function: Prevents cable pull-out
- Benefit: Reduces vibration damage
- Use: Machinery and automation
Best for moving or vibrating systems.
Our 316 stainless steel M20 cable glands provide maximum corrosion resistance for harsh and hygienic environments.
- Material: 316 stainless steel
- Resistance: Chemical and
- corrosion
Certification: Available on request - Use: Food, pharma, offshore
Supplied in bulk with export support.
We offer full OEM customization to match your technical and branding requirements with flexible production support.
- Custom: Seals, threads, finishes
- Support: Prototype to mass production
- Volume: Flexible MOQ
- Service: Private labeling
- Contact us to start your OEM project.
M20 cable gland specifications & certifications
Specification | Details |
Thread standard | M20 × 1.5 mm (metric coarse) |
Materials | Nickel-plated brass, Nylon PA66, 316 Stainless Steel |
IP rating | IP54 / IP65 / IP68 (model dependent) |
Cable OD range | 6 mm – 14 mm (standard models: 6–12 mm) |
Operating temperature | -40°C to +120°C |
Seal material | Neoprene (NBR), EPDM, Silicone (custom) |
Certifications | CE, UL, RoHS, REACH |
Finish (brass) | Nickel plated or natural (bare) brass |
Halogen-free option | Available (Nylon PA66 models) |
Min order quantity | From 500 pcs (standard stocked sizes) |
How to choose the right M20 cable gland for your project
Not sure which variant is the right fit for your application? Here’s a quick 5-step guide we walk our buyers through every day:
Check your cable OD first
Measure the outer jacket diameter of your cable in mm. Your M20 gland must accept this diameter within its grip range (typically 6–12 mm for standard models). This single measurement will save you time and avoid costly mis-orders.
Confirm your panel thread
Verify that your enclosure knockout is drilled and tapped for M20 × 1.5. If you’re working with NPT or PG threads, let us know — we have adapters and cross-thread solutions ready.
Choose your material
Brass for high-vibration, high-temp, or grounding (earthing) requirements. Nylon PA66 for lightweight, corrosion-resistant, or budget-conscious builds. Stainless steel for chemical, food-grade, or offshore environments.
Select your IP rating
For dry indoor enclosures, IP54 is typically sufficient. For outdoor, wet, or washdown environments, specify IP65 or IP68. We’ll confirm your gland and seal combination achieves the rating you need.
Tell us your volume
Where are M20 cable glands used?
M20 is the most popular cable gland thread size globally, and for good reason. Here’s where your customers — and ours — are using them every day:
- Industrial control panels and distribution boards
- OEM machinery enclosures and motor housings
- Telecom junction boxes and outdoor cabinets
- Factory automation and robotics
- Solar energy systems and inverter enclosures
- Marine and offshore electrical installations
- HVAC systems and building management
- Food and beverage processing equipment
- Transportation and railway electronics
- Data centre cable entry and management
- Construction site temporary power panels
- Outdoor infrastructure and utility cabinets
Why buyers choose Difvan as their M20 cable gland manufacturer
We know you have options when it comes to sourcing cable glands. Here’s why distributors, OEMs, and wholesalers around the world keep coming back to Difvan:
Direct from our factory
When you buy from Difvan, you’re buying direct from the manufacturer — no middlemen, no inflated margins. You get factory-direct pricing and a direct line to the people making your product.
Flexible bulk & wholesale supply
Whether your order is 500 pieces or 500,000, we scale with you. Our wholesale pricing tiers reward volume, and our lead times are consistent — so your supply chain stays reliable.
Full OEM customisation
Your brand, your spec, your packaging. We support custom seal materials, thread variants, surface finishes, and private label from prototype to full production runs.
Global export, fast
We export to Europe, North America, the Middle East, Southeast Asia, and Australia. Our logistics team handles CE, UL, RoHS, and customs documentation so you don’t have to.
Get in touch with our M20 cable gland team
Whether you need a quick size confirmation, a bulk quote, or you’re planning an OEM project from scratch — we’re here to help. Our sales and engineering team at Difvan responds to all trade enquiries within one business day.
Just share your cable specification, required quantity, and delivery country and we’ll take it from there. We genuinely love working with distributors, wholesalers, and OEM partners who want a reliable, factory-direct supply partner they can grow with.
M20 cable gland FAQs
Here are the questions we hear most often from distributors, OEM builders, and wholesalers. If yours isn’t here, just ask our team — we respond fast.
Q1: What cable size does an M20 cable gland fit?
The M20 thread diameter converts to approximately 0.787 inches (nominal). The standard cable acceptance range of 6–12 mm equals roughly 0.236″ to 0.472″. The panel knockout hole you’ll need to drill is 20.5 mm, or approximately 0.807″. For a full mm-to-inch conversion chart, refer to the size table in this page.
Q2: What is the M20 cable gland size in inches?
For standard stocked M20 sizes (brass nickel-plated and nylon PA66), we can typically dispatch within 3–7 business days for orders up to 10,000 pieces. For larger volumes or custom variants, lead times are confirmed at the quotation stage. We’ll always give you an honest timeline upfront.
Q3: How quickly can you dispatch a bulk M20 cable gland order?
Q4: Are your M20 cable glands IP68 rated?
Yes — selected models in both our brass and nylon PA66 ranges are rated IP68 (1 metre continuous immersion, 24 hours). IP65 is standard across most of our range. Test reports and third-party certification documents are available for OEM and wholesale customers on request.
Q5: Can I order M20 cable glands with custom packaging or my own brand?
Our standard MOQ starts from 500 pieces for stocked M20 variants. For custom configurations or OEM orders, MOQs are discussed during the quotation process. We’re happy to support smaller trial orders for new distributor and wholesale accounts — just get in touch and we’ll find a quantity that works for both of us.
Q6: What is the minimum order quantity for bulk M20 cable gland orders?
Q7: Do you export M20 cable glands internationally?
Yes — we export to distributors and OEM customers across Europe, North America, the Middle East, Southeast Asia, and Australia. Our team handles all export documentation including CE declarations, RoHS certificates, packing lists, and certificates of origin. Tell us your country and we’ll confirm lead times and shipping options for your region.
Contact Difvan Directly
Response within 24 hours. Factory direct — no middlemen.
No.1 HongQi Road, Xinguang Industrial Zone,
Liushi, Yueqing, Wenzhou, Zhejiang, China 325603
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