AtexBox

Non-armoured

Unarmoured ATEX cable glands (HARDO HCG1) are single-compression metal glands for circular unarmoured, screened or braided cables. They seal the outer sheath into an Ex enclosure. Certified ATEX/IECEx for Zones 1, 2, 21 and 22 — Ex db / Ex eb / Ex tb, IP66/IP68, −55°C … +160°C, metric M20–M90 or NPT. Separate cable strain relief is required.

To select: entry thread (metric / NPT) · cable OD A + sealing code · material · Ex marking and certificates. Not for SWA/SWB armoured cable — use Armoured (HCG2). M16 entry: HAD adaptor + HCG1 M20.

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Product selection

Product selection

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Material
Cable type
Non-armouredArmoured
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.