FAQs

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How do I use the load/strength test report?

For Type 1 Fixes, ‘Buttonfix strength testing report’ is available here.

The figures in the table are for four Type 1 Fixes (in a standard ‘2 x 2’ array) and are already adjusted to give a 1.4 safety factor. These figures are actually the maximum for two Fixes only; this is because theoretically, allowing for inaccurate fixing of the components, only two Fixes can be guaranteed to be loaded at one time: this applies to any size of panel, with more than 4 Fixes.

In practice, with reasonably accurate fixing, and with their inherent flexibility, the load will be shared between most of the components, and the safe loads will increase with an increase in the number of Fixes used.

As can be seen from the design tables, It is a good rule of thumb to aim to keep the ‘cantilever’ distance — that is the ‘shelf depth’ — shorter than the height between the Fixes.

What is the best type of screw fixing for thin panels?

Varianta Euroscrews are useful for giving good strength in thin panels, normally in particleboard. The orange Buttons are designed to accept countersunk Ø6.2mm Euroscrews for Ø5mm pilot holes. While both the Type 1 and Type 2 Fixes are not specifically designed for use with Euroscrews, they can function satisfactorily. For instance the Ø6.2mm Euroscrews are a tight fit in the Type 1 Fix holes, but they install readily when the Fix is in-situ with the pilot holes in the panel to guide them. The Type 2 Fix will only accept Ø4.2mm Euroscrews for Ø3mm pilot holes. Please see the Videos page.
For more detailed information, including screw length/panel thickness guides, please download the ‘Suggested Fixings for Buttonfix’ PDF from the Useful Information page.

Do I have to leave a gap at the top of a panel?

Not necessarily; by orienting the Type 1 Fixes at 90 degrees, panels can be slid in sideways. Adjacent panels can also be mounted similarly, but of course the first panel(s) installed will effectively be locked in place, unless the subsequent panels are removed. This can be advantageous for providing security for a run of panels, requiring only the last panel installed to be secure.
Also, Type 2 Fixes allow a direct push/pull fit without the need for any gap.

Can Button-fixes withstand shock loading?

Type 1 Fixes can carry a significant cantilever load; as a general rule of thumb, it is a good idea to keep the cantilever distance, that is the shelf depth, shorter than the height between the Fixes. In most circumstances, the screws will pull out of the panel before the Button-fixes fail. Please download our load test results from the Useful Information page on this website. This should help you to specify the number of Button-fixes to use for a given load. However, we strongly recommend that you perform your own tests for your specific application and the materials that you intend to use and that you use a generous safety factor.

Type 2 Fixes are designed as a push/pull fit, and will therefore not take a cantilever load. Assuming that the screws and substrate are properly matched, a vertical panel under no other loading than its own weight, fixed with four Type 2 Fixes, can safely weigh 80kg. Other configurations should always be properly tested by the user to their satisfaction.
Each Type 2 Fix requires approximately 12kg force to separate the Button and Fix; this should be taken into account when designing your installation and defining your safety factors.
Type 2 Fixes should only be used on vertical panels or in applications where the weight of the panel does not act to separate the fixing. In critical applications for Type 2 Fixes, always use the safety cord accessory.
Please note that safety cords are sold separately from the Button-fixes.

When would I use Varianta Euroscrews in the Buttons?

Varianta Euroscrews are useful for giving good strength in thin panels, normally in particleboard. The orange Buttons are designed to accept countersunk Ø6.2mm Euroscrews for Ø5mm (0.197″) pilot holes.

For more detailed information, including screw length/panel thickness guides, please dowload the ‘Suggested Fixings for Buttonfix’ PDF from the Useful Information page.

Can the gap between panels be zero when using Type 1 Fixes?

Yes, but you will need to machine a stepped rebate for the Type 1 Fix moulding – please ensure that the Fix is not sub surface, otherwise the panel may bind up on installation. Note that if the Fixes are used on the removable panel, the screws holding the Fix will no longer go into the full panel thickness, and may have a reduced pull-out strength.

Can I use machine screws?

Yes; the lime green countersunk screw Button will accept an M5 countersunk screw. The rebated Fix will accept M4 countersunk screws, while the surface-mounted Fix will accept M4 pan head screws, ideally with washers, or for maximum strength M5 pan head screws, although they are a tight push fit in the fixing holes.

Can I space off the Buttons?

Yes, generally using M5 x 25 steel ‘penny’ washers; however, if the Buttons/Fixes are binding due to angular misalignment, it is best to use washers that are within the ‘footprint’ of the Button (i.e. Ø18mm or less, for example part number 1000750000VR here) which will allow more angular tolerance. Bear in mind that spacing off the Buttons will increase the bending forces on the button fixing and reduce its weight carrying capacity.

How many Button-fixes do I need per panel?

If the load is purely in the vertical plane, then four Button-fixes will usually be sufficient to carry the load of most timber based panels that one person can lift. However, in order to keep the panel flat you may wish to use more Button-fixes. As a rough guide, placing Button-fixes on 600mm is usually good practice but it will very much depend on your particular application.

For more detailed loading information on Type 1 Fixes, please see the ‘Buttonfix strength test report’ on the Useful Information page.

The Type 2 Fix is ideal for applications where the emphasis is on ease of fit rather than strength. Assuming that the screws and substrate are properly matched, a vertical panel under no other loading than it’s own weight, fixed with four Type 2 Fixes, can safely weigh 80kg. Other configurations should always be tested by the user.
Each Type 2 Fix requires approximately 12kg force to separate the Button and Fix; this should be taken into account when designing your installation and defining your safety factors.
Type 2 Fixes should only be used on vertical panels or in applications where the weight of the panel does not act to separate the fixing. In critical applications for Type 2 Fixes, always use the safety cord accessory.

Want to ask us a question?

If you still can’t find out what you need to know, please submit your own question on the Contact us page of this website. We will respond to you as soon as possible by email, as well as posting the answer here.