AtexBox

Cable Glands

ATEX cable glands provide a certified cable entry into an Ex enclosure. Select by cable type, thread, diameter, protection concept, zone, material and temperature. AtexBox supplies HARDO metal glands HCG1 (unarmoured) and HCG2 (armoured), metric and NPT, in brass, nickel-plated brass and stainless steel 316L.

To select: cable type (unarmoured / SWA–SWB) · entry thread (metric / NPT) · cable OD + sealing code · material · Ex marking and certificates.

Selection guide — HCG1 vs HCG2, steps, FAQ

HCG1 vs HCG2

HARDO metal glands — comparison
FeatureHCG1HCG2
CableUnarmoured / screened / braidedArmoured SWA / SWB
CompressionSingleDouble
Ex markingEx db / Ex eb / Ex tbEx db / Ex eb / Ex tb
IPIP66 / IP68 (1.5 m, 2 h)IP66 / IP68 (1.5 m, 2 h)
Temperature−55°C … +160°C−55°C … +160°C
Published threadsM20–M90 / NPTM20–M90 / NPT

Selection steps

  1. Choose the line: unarmoured (HCG1) or armoured (HCG2).
  2. Match thread to the enclosure entry (metric / NPT). M16 entry: HAD + HCG M20.
  3. Select material (brass, nickel-plated brass, 316L).
  4. Match size and sealing code to cable OD from the same table row.
  5. Verify Ex marking, IP, temperature and documents before installation.

Warnings

  • Do not confuse HCG1 with HCG2 — cable construction decides the series.
  • Do not publish an M16–M90 range for HCG; M16 uses an HAD adaptor.
  • Final selection must be made by a competent person using the full installation documentation.

FAQ

What is the difference between HCG1 and HCG2?

HCG1 is single-compression for unarmoured cables; HCG2 is double-compression for SWA/SWB armoured cables.

What Ex marking do HARDO metal glands carry?

II 2G Ex db IIC Gb, II 2G Ex eb IIC Gb and II 2D Ex tb IIIC Db (DNV 22 ATEX 53555X and IECEx DNV 22.0086X).

Are NPT threads available?

Yes. Alongside metric M20–M90 there are corresponding NPT versions. The gland thread must match the enclosure entry.

Sources: HARDO HCG source card, DNV 22 ATEX 53555X / IECEx DNV 22.0086X.

Showing 1–12 of 160 results

Product selection

Product selection

Clear

No parameters selected

Material
Cable type
Thread
Thread size
Metric
NPT
Ø cable
mm

How to use the selection filters

The left-hand panel (on phones: the Selection button) narrows the HARDO cable-gland catalogue. Set parameters in engineering order — from cable type to diameter.

1 Cable type

Non-armoured → HCG1 series. Armoured (SWA/SWB) → HCG2. On armoured/non-armoured child categories this filter is already fixed.

2 Thread

Choose metric or NPT to match the enclosure entry. Do not mix systems — thread sizes follow the selected family.

3 Size & material

Set the thread size (e.g. M20, M25…) and material: brass, nickel-plated brass or stainless steel 316L. Multiple values are allowed — the grid shows products that match.

4 Cable diameter Ø

Overall Ø — outer cable diameter. For armoured glands also use Under sheet Ø. Only glands whose sealing range covers the value remain.

  1. Set cable type (or open the armoured / non-armoured subcategory).
  2. Match thread family to the enclosure entry (metric / NPT). M16 entry: HAD adaptor + M20 gland.
  3. Choose thread size and gland material.
  4. Enter cable OD (and under-sheet OD for HCG2 when needed).
  5. Click Find matching glands — the product grid updates.
  6. Open the SKU card and verify sealing code, Ex marking and documents.

  • Above the grid, Selected specification chips appear — × removes one parameter.
  • Clear in the panel resets the whole selection.
  • On mobile the filter panel opens as a Bootstrap offcanvas (Selection button).
  • The apply button shows how many glands match before you confirm.

  • They do not replace checking the ATEX/IECEx certificate and installation instruction.
  • They do not auto-add an HAD adaptor — for M16 add it separately.
  • Final selection must be made by a competent person with the full installation documentation.

HCG1 — cable ranges (unarmoured)

Table for unarmoured HCG1 glands. The CODE column shows nickel-plated brass (N) examples; the same Ø ranges and wrench sizes apply to brass (B) and stainless 316L (S) for the same sealing code.

A Cable Ø

Outer diameter of the unarmoured cable, min–max [mm].

E Thread length

Thread length E [mm] — entry into the enclosure.

A/F Across flats

Wrench size across flats [mm].

A/C Across corners

Dimension across corners [mm].

How to read: measure outer cable Ø → must fit column A (min–max) on the same row as the thread.

HCG1 — Metric (A = cable Ø)
CODE METRIC E [mm] A — cable Ø [mm] A/F A/C
min max
HCG1N1M20XSM20173.28.52426.5
HCG1N1M20SM20176.211.62426.5
HCG1N1M20M20178.013.92730
HCG1N2M25M251711.219.63640
HCG1N3M32M321717.126.04246
HCG1N4M40M401723.631.65055
HCG1N5M50SM501731.137.55560
HCG1N5M50M501735.743.16065
HCG1N6M63SM631741.648.77077
HCG1N6M63M631747.355.27481
HCG1N7M75SM751754.161.28087
HCG1N7M75M751761.267.28593
HCG1N9M90M902466.779.2108116
HCG1 — NPT (A = cable Ø)
CODE NPT E [mm] A — cable Ø [mm] A/F A/C
min max
HCG1N1N20XS1/2″203.28.52426.5
HCG1N1N20S1/2″206.211.62426.5
HCG1N1N201/2″208.013.92730
HCG1N2N253/4″2111.219.63640
HCG1N3N321″2617.126.04246
HCG1N4N401 1/4″2623.631.65055
HCG1N5N50S1 1/2″2631.137.55560
HCG1N5N502″2735.743.16165
HCG1N6N63S2″2741.648.77077
HCG1N6N632 1/2″4047.355.27481
HCG1N7N75S2 1/2″4054.161.28087
HCG1N7N753″4261.267.29193
HCG1N9N903 1/2″4266.779.2108116

Ø ranges from HARDO pricelist / product meta. E, A/F, A/C from the HCG1 data sheet. Filter Overall Ø maps to column A.

HCG2 — cable ranges (armoured)

Table for armoured HCG2 glands. The CODE column shows nickel-plated brass (N) examples; the same Ø ranges apply to brass (B) and stainless 316L (S) for the same sealing code.

A Under-armour Ø

Cable diameter under the armour (bedding), min–max [mm].

B Overall Ø

Outer cable diameter (overall / outer sheath), min–max [mm].

E Thread length

Thread length E [mm] — entry length into the enclosure (metric or NPT).

How to read: under-armour Ø → column A; overall Ø → column B. Both must match the same row.

HCG2 — Metric (A = under armour, B = overall)
CODE METRIC E [mm] A — under armour Ø [mm] B — overall Ø [mm]
min max min max
HCG2N1M20XSM20173.28.56.213.1
HCG2N1M20SM20176.211.69.615.5
HCG2N1M20M20178.013.912.520.9
HCG2N2M25SM251711.219.614.021.5
HCG2N2M25M251711.219.618.325.6
HCG2N3M32M321717.126.023.733.4
HCG2N4M40M401722.131.628.039.5
HCG2N5M50SM501729.537.535.246.0
HCG2N5M50M501735.643.140.552.4
HCG2N6M63SM631740.148.745.658.5
HCG2N6M63M631747.255.254.664.5
HCG2N7M75SM751752.861.259.070.4
HCG2N7M75M751759.167.266.776.3
HCG2N9M90M902466.679.276.287.2
HCG2 — NPT (A = under armour, B = overall)
CODE NPT E [mm] A — under armour Ø [mm] B — overall Ø [mm]
min max min max
HCG2N1N20XS3/8″203.28.56.213.1
HCG2N1N20S1/2″206.211.69.615.5
HCG2N1N201/2″208.013.912.520.9
HCG2N2N25S3/4″2111.219.614.021.5
HCG2N2N253/4″2111.219.618.325.6
HCG2N3N321″2617.126.023.733.4
HCG2N4N401 1/4″2622.131.628.039.5
HCG2N5N50S1 1/2″2629.537.535.246.0
HCG2N5N502″2735.643.140.552.4
HCG2N6N63S2″2740.148.745.658.5
HCG2N6N632 1/2″4047.255.254.664.5
HCG2N7N75S2 1/2″4052.861.259.070.4
HCG2N7N753″4259.167.266.776.3
HCG2N9N903 1/2″4466.679.276.287.2

Ø ranges from HARDO pricelist / product meta. Thread length E and NPT designations from the HCG2 data sheet. Filter Under sheet Ø = column A; Overall Ø = column B.