T-slot 6 connecting strip – internal straight connector for Series 20 profiles 2020 and 2040

The T-slot 6 connecting strip is a steel internal connector designed for straight, end-to-end joining of two Series 20 structural aluminium profiles. It allows a stable End-face connection (end face–end face) to be created, enabling a profile to be extended or two shorter sections to be joined into one element running in the same line.

The connector is designed for Series 20 structural aluminium profiles 2020 and 2040 with a 6 mm slot. It is compatible with the silver 2020 V-slot aluminium profile and the silver 2040 V-slot aluminium profile, as well as the corresponding black anodised versions.

The strip is inserted directly into the slots of both profiles being joined. Installation does not require drilling, milling or tapping the profiles, allowing the connection to be completed quickly without additional mechanical machining or external connecting plates.

After installation, most of the strip remains concealed inside the profile slot. This provides a neat and compact connection without components protruding beyond the outline of the structure. The remaining surfaces and profile slots can still be used to mount guards, guides, holders, angle brackets and other accessories.

The strip is made from steel and protected with a zinc-plated coating. The silver-grey finish provides a technical appearance and complements both profiles anodised in the natural aluminium colour and profiles anodised in black.

The product is supplied complete with four DIN 914 M5×6 set screws. The screws lock the strip in the slots of both profiles and do not need to be ordered separately.

End-face connection between two Series 20 aluminium profiles

The T6 internal straight connector allows two coaxially positioned profiles to be joined so that their end faces meet. The strip passes through the slot of the first and second profile, helping to maintain correct alignment and a straight line throughout the structure.

The connection can be used for:

• extending a 2020 aluminium profile,
• extending a 2040 aluminium profile,
• joining two shorter profile sections into one longer element,
• building long frames, guides and profile beams,
• expanding an existing structure made from Series 20 profiles,
• joining modules of workstations and equipment,
• building lightweight frames and supporting structures,
• creating an End-face connection (end face–end face) without welding.

Before tightening the screws, bring the end faces of both profiles precisely together and check their relative alignment. The strip is primarily intended to align, position and stabilise the profiles in one line.

The set screws should not be used to pull together profiles that are positioned a considerable distance apart. Before the screws are tightened, the end surfaces should already be correctly positioned and brought together.

Installation without drilling or additional profile machining

One of the main benefits of the T6 connecting strip is that the connection can be created without additional machining of the aluminium profiles. Installation does not require:

• drilling holes in the profiles,
• milling the slots or end surfaces,
• tapping the central profile holes,
• welding structural components,
• using external connecting plates,
• using protruding angle brackets or supports.

Insert the strip into the 6 mm slot of the first profile, leaving part of it protruding beyond the end face. Then slide the slot of the second profile onto the remaining part of the connector, bring both profiles precisely together and align them in one line.

After checking the position of the profiles, tighten the four DIN 914 M5×6 set screws using a standard hex key. The screws press the strip against the surfaces of the slots and help keep both profiles in the selected position.

Key features of the T6 connecting strip

• Type: connecting strip / internal straight connector / longitudinal connector
• Purpose: end-to-end joining of two aluminium profiles in one line
• Connection type: End-face connection (end face–end face)
• Compatible profile series: Series 20
• Compatible profiles: 2020 and 2040
• Compatible slot width: 6 mm
• Slot type: T-slot 6 / V-slot 6
• Colour: silver-grey
• Finish: zinc-plated
• Installation method: inside the slots of both profiles
• Profile machining: not required
• Number of screw holes: 4
• Fastening components: 4 DIN 914 M5×6 set screws
• Mounting hardware included: yes
• Installation tool: standard hex key
• Visibility after installation: the strip remains largely concealed in the slot
• Disassembly: the connection can be unscrewed and reused
• Application: frames, guides, supporting structures, workstations and modular constructions
• Benefits: quick installation, no profile machining and a neat connection without external components

Set contents

The complete product includes the strip and all components required to lock it inside the profile slots:

• 1× connecting strip for T-slot 6
• 4× DIN 914-M5x6

The DIN 914 M5×6 set screws have an M5 thread and are designed to lock the strip by pressing it against the slot surface. When correctly tightened, they help keep the connector in the selected position relative to both profiles.

Aluminium profiles and other structural components are not included unless ordered separately.

T6 connecting strip installation instructions

1. Prepare the profiles: check that both profiles belong to Series 20, have a compatible 6 mm slot and have a 2020 or 2040 cross-section.

2. Check the end surfaces: make sure that the profiles have been cut square and that larger burrs have been removed from their edges.

3. Loosen the set screws: before inserting the strip, check that the ends of the DIN 914 M5×6 screws do not protrude in a way that obstructs installation.

4. Insert the strip into the first profile: place part of the connector in the selected 6 mm slot, leaving a suitable length beyond the profile end face.

5. Fit the second profile: slide the slot of the second profile onto the protruding part of the strip.

6. Bring the profile end faces together: align both components in one line and bring their end surfaces precisely together.

7. Check the alignment: verify the straightness, level and relative position of the joined profiles.

8. Tighten the screws: tighten the four DIN 914 M5×6 screws gradually, distributing the clamping pressure across both sides of the connection.

9. Check stability: make sure that the strip does not move inside the slot and that the profile end faces remain correctly pressed together.

Tighten the screws evenly and with care. Overtightening may place unnecessary stress on the slot surface or alter the alignment of the joined profiles.

Connecting strip for 2020 aluminium profiles

In Series 20 aluminium profiles 2020 with a 6 mm slot, the strip can be used to extend guides, beams, frames and other components of lightweight modular structures.

The connector is installed directly in the selected profile slot. As a result, no additional holes are required, and it can be used both when building a new structure and when subsequently expanding an existing frame.

The manufacturer recommends using the strips in pairs. Using two strips in different profile slots helps improve connection alignment, increases stability and limits relative rotation of the profiles.

In structures that require a particularly stable connection, one strip can be installed in every available profile slot.

Connecting strip for 2040 aluminium profiles

The strip is also compatible with Series 20 structural aluminium profiles 2040 with a 6 mm slot. It can be used for end-to-end joining of profiles in machine frames, V-slot guides, lightweight tables, technical supporting structures, automation equipment and DIY constructions.

The 2040 profile has several available slots, so more than one strip can be used in a single End-face connection. Positioning connectors in several slots distributes the forces across more points and limits relative twisting of the profiles.

The manufacturer recommends using at least two strips. For structures requiring particularly stable alignment, one connector can be installed in every available slot.

The number of strips used should be matched to the number of available slots, the length of the joined profiles, the support method and the expected load on the completed structure.

Connection stability and number of strips used

The T6 connecting strip is intended primarily for aligning and stably positioning two Series 20 aluminium profiles in one line. Four set screws lock the connector in the slots and limit its movement.

For a more stable connection, the manufacturer recommends using the strips in pairs. This means installing two connectors in two different slots of the profiles being joined.

For structures requiring particularly high stability, it is recommended to use one connecting strip in every available slot. This arrangement helps improve alignment, limit twisting and distribute the applied forces more evenly.

For structures exposed to higher loads, vibration, twisting or frequent changes in the direction of forces, it is also worth considering:

• using several strips in one connection,
• positioning the connectors symmetrically in the available slots,
• using an additional connecting plate or angle bracket,
• checking the straightness of the profiles before fully tightening,
• periodically checking the tightness of the set screws,
• matching the number of connectors to the load and geometry of the structure.

The final stiffness of the connection depends on the profile cross-section, the number of strips used, the arrangement of the slots, the length of the joined components, the support method and the type of load.

Applications of the T6 internal straight connector

The connecting strip for Series 20 aluminium profiles can be used wherever two 2020 or 2040 profiles need to be joined end-to-end in one line.

Typical applications include:

• frames for small machines and equipment,
• guides and V-slot structures,
• workstations and lightweight assembly tables,
• long beams and profile guides,
• technical supporting structures and support frames,
• machine guards and protective partitions,
• automation and robotics structures,
• 3D printers and CNC machines,
• lightweight trolleys, frames and sliding platforms,
• workshop structures and DIY projects,
• expanding existing frames made from Series 20 profiles,
• custom structures made from 2020 and 2040 profiles.

The product page does not specify the maximum permissible load of the completed connection. The number of strips, connector arrangement and any additional reinforcements should be matched to the profile length, structure geometry, type of support and expected load.

The T-slot 6 connecting strip with four DIN 914 M5×6 screws is a practical solution for creating straight End-face connections between Series 20 aluminium profiles 2020 and 2040. Installation without additional machining, concealment of the connector inside the slot and the option of using several strips make it possible to build neat, modular structures that can be modified easily at a later stage.