M20 black nylon cable gland with locknut, moulded M20x1.5 marking

M20 Cable Gland - IP68 Waterproof Nylon, 6-12mm Cable

$1.99 NZD
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SKU: CG-M20-BK

M20 Cable Gland - IP68 Waterproof Nylon, 6-12mm Cable

$1.99 NZD
Availability:
Dispatch: Within 24 hours 7-day dispatch, excluding public holidays

NZ Post: 1-2 days urban · 2-4 days rural

Shipping from $5.99 urban / $9.99 rural.

Buy more, pay less Prices shown are per unit. Add enough of this item and the lower rate applies on its own at checkout. There is no code to enter and you do not need to buy a pack. Choosing a tier here just sets the quantity for you. Larger quantities go out in the same bag, so packing, handling and postage cost us less per unit. We pass that saving straight on to you, so you can buy more for less.

Easy 30-day returns · 12-month warranty

Free Urban delivery on orders over $66
Urban $66 Rural $88

Every sealed box eventually needs a cable going into it, and this is the fitting that lets one through without letting the weather back in. Drill a 20mm hole, push the gland through, do the lock nut up on the inside, then run your cable and tighten the dome nut. That squeezes a rubber insert down onto the cable so it seals and grips at the same time, which means the joint inside the box never takes the strain if someone pulls on the lead. It suits round cable from 6mm up to 12mm across, so it covers most flex, low voltage runs and sensor leads. Black nylon, lock nut and panel gasket in the pack, sold as singles so you buy exactly what the enclosure needs.


  • M20 x 1.5 thread, drops into a 20mm panel hole
  • Suits round cable 6mm to 12mm outside diameter
  • Rated IP68 once it is fitted and tightened properly
  • Lock nut and panel gasket included
  • Clamps the cable, so it doubles as strain relief
  • Nylon body, moulded CE and M20X1.5 markings
  • Rated -40C to +100C
  • 27mm across the flats, spanner or hand tight

Specifications


TypeM20 compression cable gland with lock nut and gasket
ThreadM20 x 1.5mm pitch
Thread length9mm
Panel hole required20mm
Cable range6-12mm outside diameter
Ingress protectionIP68 when correctly fitted and tightened
Operating temperature-40C to +100C
Body materialNylon
SealsRubber sealing insert plus separate panel gasket
ColourBlack
Wrench size27mm across the flats (dome nut)
Markings on this stockCE and M20X1.5 moulded into the body
Fixing methodNut fixation, lock nut behind the panel
Sold asSingle assembled gland

What's in the box


1x
M20 cable gland, assembled

Main body, dome nut with rubber sealing insert, panel gasket and lock nut. Sold individually - add the quantity your enclosure needs.

Great for


Outdoor junction boxes & enclosures
LED driver & power supply housings
3D printer & CNC control cabinets
Camera, sensor & irrigation housings
Caravan, trailer & marine wiring
Pump, solar & garden lighting runs

How to fit it

  1. Drill a 20mm hole

    A step drill or 20mm hole saw in the enclosure wall. Deburr it so the gasket sits flat.

  2. Mount the gland

    Slide the gasket onto the thread, push it through from the outside, then run the lock nut on from the inside and tighten.

  3. Run the cable

    Back the dome nut off, feed the cable through, and leave a little slack inside the box.

  4. Seal it up

    Tighten the dome nut with a 27mm spanner until the insert closes onto the cable, then give the cable a tug to check it is held.

Good to know: the IP68 rating depends on the install - the cable needs to sit inside the 6-12mm range, the gasket needs a clean flat face to seal against, and the dome nut needs to be properly tightened. This is a mechanical cable entry rather than an electrical connector, so it carries no current or voltage rating of its own, and any mains work still needs to follow NZ wiring rules and be done or checked by a registered electrician. Every order is checked before it ships from our Te Awamutu stock.

Frequently Asked Questions

Answers to the questions buyers ask most.

What size hole does it need?
A 20mm clearance hole. The M20 x 1.5 thread passes through the panel and the supplied lock nut does it up from the inside, so you don't need to tap anything.
What cable will it fit?
Round cable from 6mm to 12mm outside diameter. Anything thinner than 6mm won't be gripped properly by the rubber insert and the seal won't hold, so pick a smaller gland for thin cable.
Is it actually waterproof?
It is rated IP68 when it is fitted properly: the panel gasket seated against a clean flat face, the lock nut done up, the cable inside the 6-12mm range, and the dome nut tightened down onto the insert. Fitted loosely or on an uneven surface it will leak like any other gland.
Does it come with the lock nut and gasket?
Yes. Each gland ships assembled as four parts: the main body, the rubber sealing insert and dome nut, the panel gasket, and the lock nut.
What is it made of?
Nylon body and nuts with a rubber sealing insert and gasket, in black. Rated for -40C to +100C, and the body carries moulded CE and M20X1.5 markings.
Do I need tools to fit it?
Only for the final nip up. The dome nut is 27mm across the flats, so a 27mm spanner or adjustable will do it. Hand tight plus a bit is usually enough on soft flex.
Can I use it on mains wiring?
It is a mechanical cable entry, not an electrical connector, so it doesn't carry a current or voltage rating. Any mains work still needs to follow NZ wiring rules and be done or checked by a registered electrician.

Have a Question About This Product?

Send it through and we will get back to you by email.

Why Buy from NZN

Useful parts, fair prices and someone local to help.

I'm Lukas, an engineering student and maker based in Te Awamutu. NZN grew out of a CNC build that dragged on for months because every missing cable, bolt or electronic part meant another overseas order. I started the shop so Kiwi makers can spend more time building and less time waiting for the next parcel.

  • Stocked here in New Zealand

    Orders are picked and packed in Te Awamutu and dispatched within 24 hours every day, excluding public holidays. NZ Post target delivery is 1-2 days urban and 2-4 days rural.

  • Fair prices, clearly shown

    Prices are kept competitive and quantity discounts are shown upfront. Free delivery starts at $66 for urban addresses and $88 for rural addresses.

  • 30-day returns and 12-month warranty

    Get in touch if something is not right and we will help sort it.

  • Practical product support

    Ask a product question and get help from a real person in New Zealand who knows the range.

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