Description
HMI Brass Cable Gland 63mm (2-1/2”) – Single & Double Compression
The HMI Brass Cable Gland 63mm (2-1/2”) is a nickel-plated brass cable-entry solution available in two configurations: Single Compression SC063 and Double Compression DC063.
According to HMI’s current manufacturer specifications, SC063 is 63mm (2-1/2″), while DC063 is also 63mm (2-1/2″). HMI specifies nickel-plated brass construction and a BSC (British Standard Conduit) entry thread for both ranges. The Single Compression version is specified for armoured and unarmoured cables, while the Double Compression version is specified for armoured cables.
A key point for purchasing teams is that 63mm is the gland-size designation and should not automatically be treated as the cable’s outside diameter. The correct gland should be selected after checking the cable’s actual OD, cable construction, compression requirement and enclosure entry.
Our cable gland size selection guide explains why cable OD is more important than selecting a gland simply from the cable’s conductor size.
HMI 63mm Single Compression Cable Gland – SC063
The HMI SC063 63mm (2-1/2″) Single Compression Cable Gland is made from nickel-plated brass and is specified by HMI for indoor or outdoor applications involving armoured or unarmoured cables.
Its primary function is to grip the outer sheath of the cable. The SC063 can therefore be considered when the cable and equipment specification calls for a Single Compression gland of this size.
SC063 Specifications
| Specification | Details |
| Brand | HMI |
| Product Type | Single Compression Cable Gland |
| Model / Code | SC063 |
| Gland Size | 63mm (2-1/2″) |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC – British Standard Conduit |
| Cable Type | Armoured / Unarmoured |
| Application | Indoor / Outdoor |
| Main Function | Grips outer cable sheath |
| Accessories | Earth Tag, Shroud available on request |
HMI’s manufacturer page lists SC063 as 63MM (2-1/2″) and specifies nickel-plated brass, BSC entry thread and suitability for armoured/unarmoured cable applications.
Important Selection Point
Do not purchase SC063 merely because someone describes the cable as a “63mm cable.” Check the complete cable outside diameter and the manufacturer’s applicable gland selection data first.
Thunderbolt’s Cable Gland Supplier India Size Guide also explains that cable gland selection should primarily consider cable OD rather than only cable sq.mm.
HMI 63mm Double Compression Cable Gland – DC063
The HMI DC063 63mm (2-1/2″) Double Compression Cable Gland is a nickel-plated brass gland designed for armoured cable applications.
HMI specifies that its Double Compression design seals and grips the inner and outer sheath, while the cone and ring clamp the armour. This distinguishes DC063 from the Single Compression SC063.
DC063 Specifications
| Specification | Details |
| Brand | HMI |
| Product Type | Double Compression Cable Gland |
| Model / Code | DC063 |
| Gland Size | 63mm (2-1/2″) |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC – British Standard Conduit |
| Cable Type | Armoured |
| Application | Indoor / Outdoor |
| Main Function | Seals inner & outer sheath |
| Armour Clamping | Cone & Ring |
| Accessories | Earth Tag, Shroud, Stop Plug, Reducer / Adaptor available on request |
HMI’s official range identifies DC063 as 63MM (2-1/2″) and specifies its Double Compression function for armoured cables.
HMI 63mm Single vs Double Compression Comparison
Single Compression – SC063
| Feature | HMI SC063 |
| Gland Size | 63mm (2-1/2″) |
| Product Code | SC063 |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC |
| Cable Type | Armoured / Unarmoured |
| Compression Type | Single Compression |
| Primary Function | Grips outer sheath |
| Armour Clamping | Not the defining function |
| Application | Indoor / Outdoor |
| Accessories | Earth Tag, Shroud available on request |
Double Compression – DC063
| Feature | HMI DC063 |
| Gland Size | 63mm (2-1/2″) |
| Product Code | DC063 |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC |
| Cable Type | Armoured |
| Compression Type | Double Compression |
| Primary Function | Seals inner & outer sheath |
| Armour Clamping | Cone & Ring |
| Application | Indoor / Outdoor |
| Accessories | Earth Tag, Shroud, Stop Plug, Reducer / Adaptor available on request |
The manufacturer’s distinction is important: SC063 and DC063 have the same nominal gland size but different cable-entry functions and cable applications.
For a broader explanation, read our Armoured vs Unarmoured Cable Glands guide.
How to Choose the Correct HMI 63mm Cable Gland
Choosing a 63mm cable gland should involve more than matching a number on the product name.
1. Check Cable Outer Diameter
Measure the complete outside diameter of the cable with a suitable measuring instrument or obtain the dimension from the cable manufacturer’s datasheet.
Thunderbolt’s What Size Cable Gland Do I Need for My Project? guide explains that insulation, armour, number of cores and cable construction can all affect the finished cable OD.
2. Identify Armoured or Unarmoured Construction
If the cable is unarmoured, a suitable Single Compression configuration may be required.
If the cable is armoured and the project specification calls for armour clamping with the HMI Double Compression design, DC063 should be considered.
3. Confirm the Thread
HMI specifies BSC – British Standard Conduit thread for its Single and Double Compression ranges. Verify the equipment or enclosure entry before ordering.
4. Check the Installation Environment
Consider whether the cable gland will be installed:
- Indoors
- Outdoors
- In a dusty environment
- In a wet environment
- In a vibrating installation
- In a corrosive environment
- In a project with specified IP requirements
Do not assume a particular IP rating for this product unless the applicable manufacturer documentation confirms it. For more information, see our Cable Gland IP Rating guide.
Applications of HMI Brass Cable Gland 63mm
The HMI 63mm cable gland can be used for compatible industrial cable-entry requirements where the gland size, cable dimensions, cable construction and thread match the installation.
Potential application areas include:
- Electrical control panels
- PCC and MCC panels
- Switchgear equipment
- Transformers
- Industrial electrical enclosures
- Junction boxes
- Power distribution equipment
- Industrial machinery
- Manufacturing facilities
- Infrastructure projects
- EPC electrical installations
- Heavy electrical equipment
- Cable termination and entry systems
For armoured cable installations, the selection between SC063 and DC063 should be based on the cable construction and project specification rather than nominal size alone.
Why Choose Thunderbolt Electromech India Pvt. Ltd. for Cable Glands?
Thunderbolt Electromech India Pvt. Ltd. supplies cable glands and electrical accessories for engineers, contractors, panel builders, EPC companies, OEMs, maintenance teams and industrial purchase departments.
We understand that selecting the correct cable gland is not simply a matter of choosing a size. Cable OD, construction, armour, compression type, thread, environment and required sealing performance all need to be considered.
Thunderbolt offers cable-gland options from brands including HMI, Comet, Dowells, Diamond and MIC, giving industrial buyers access to different brands, sizes and configurations. Our Cable Gland buying resources are also designed to help customers compare technical requirements before procurement.
Key reasons to choose Thunderbolt:
- HMI cable gland range
- Single and Double Compression options
- Multiple cable gland sizes
- Industrial electrical product sourcing
- Support with cable gland selection
- Bulk order support
- PAN-India supply
- Assistance for EPC contractors and panel builders
- Support for industrial procurement teams
- Multiple cable-accessory categories from one supplier
For bulk enquiries, provide the HMI code, gland size, cable OD, cable construction, compression type and quantity so the requirement can be checked more accurately.
Frequently Asked Questions – HMI Brass Cable Gland 63mm
1. What is an HMI 63mm cable gland?
An HMI 63mm cable gland is a cable-entry gland in HMI’s range with a nominal gland size of 63mm (2-1/2″). HMI offers this size as SC063 Single Compression and DC063 Double Compression.
2. What is the difference between HMI SC063 and DC063?
SC063 is the Single Compression version and grips the outer sheath. DC063 is the Double Compression version for armoured cables; it seals the inner and outer sheath and uses a cone-and-ring arrangement to clamp the armour.
3. Is HMI 63mm cable gland suitable for armoured cable?
Yes. HMI specifies the Single Compression range, including SC063, for armoured/unarmoured cables. HMI specifies the Double Compression DC063 for armoured cables. The final selection should still be based on the actual cable construction and project requirements.
4. Does a 63mm cable gland fit a 63mm diameter cable?
Not necessarily. The 63mm figure is the HMI gland-size designation. It should not automatically be interpreted as the cable’s allowable outside diameter.
Always check the applicable cable OD range and manufacturer selection information before ordering.
5. How do I select an HMI 63mm cable gland?
Check:
- Cable outside diameter
- Armoured or unarmoured construction
- Single or Double Compression requirement
- Enclosure entry
- Thread standard
- Installation environment
- Required sealing/protection requirements
Our Cable Gland Supplier India pillar guide covers these selection factors in greater detail.
6. What thread does the HMI 63mm cable gland use?
HMI specifies BSC (British Standard Conduit) entry thread for both the Single Compression and Double Compression cable gland ranges.
7. What material is the HMI 63mm cable gland made from?
HMI specifies nickel-plated brass for its Single Compression and Double Compression cable gland ranges, including SC063 and DC063.
8. Which should I buy: SC063 or DC063?
The answer depends on the cable and installation specification. SC063 is the Single Compression option for armoured or unarmoured cable applications specified by HMI, while DC063 is intended for armoured cables and includes inner/outer sheath sealing and armour clamping.
9. Can the HMI 63mm cable gland be used outdoors?
HMI specifies its Single and Double Compression cable-gland ranges for indoor or outdoor applications. The complete installation should still be evaluated for its environmental and sealing requirements.
10. What accessories are available with HMI SC063?
HMI lists Earth Tag and Shroud as accessories available on request for its Single Compression cable gland range.
11. What accessories are available with HMI DC063?
For its Double Compression range, HMI lists Earth Tag, Shroud, Stop Plug and Reducer/Adaptor as accessories available on request.
12. Should I select the gland based only on cable sq.mm?
No. Cable conductor size alone is not enough. The actual cable OD can vary according to insulation, number of cores, armour and cable manufacturer. Thunderbolt’s size guide specifically recommends checking the cable’s actual OD before selecting the gland.
13. Can I use SC063 for an armoured cable?
HMI states that its Single Compression cable glands are suitable for armoured and unarmoured cables. However, whether SC063 is the correct choice depends on the cable and project specification. If armour clamping and Double Compression are required, DC063 is the relevant HMI configuration.
14. Is HMI 63mm cable gland the same as a 63mm cable?
No. Gland size and cable OD are different selection parameters. Always verify the actual cable dimensions before ordering.
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