Quick-release systems – 2020-11-24

DST fastener

Innovative solution for creating high-strength connections fast and safely without the use of tools.

Simple. Secure. Solid. DST.

DST fasteners for fast and reliable assembly of sheet metal components, wood and plastics. The product combines flexibility, safety and comfort in every application.

In a world that is full of connections, Böllhoff now presents a pioneering new technology. With Snap Technology -DST- you can create high-strength connections with ease and without tools – so that great things can be created fast and safely from your idea.

Böllhoff Parabel

Method / principle

The DST products are based on the principle of a drop lock, as found on house or room doors. Two individual parts form the basis: the guide with angled clamping jaws and the spring, which is located in a window within the guide. When inserted in a suitable opening, the clamping jaws are pressed together and after overcoming the height of the clamping jaws they are spring-loaded back outwards. This produces the typical "snap" noise and the connection is secure.

Applications

Snap technology enables high-strength and friction-locked connections of sheet metal parts, wood or plastics. Our fasteners are suitable for different material thicknesses, adapted to your application.

Product benefits
  • Simple, tool-free assembly without errors
  • Shaking, vibration and earthquake proof
  • High-strength and friction-locked
  • Disassembly with standard or special tools
  • Electrically conductive

Product benefits

There are many good reasons for using our products.

Strength and options.
Point by point.

Assembly

The risk of wrong installation is minimized by the simple and tool-free technology. Incorrect tightening torques, as with screw connections, do not matter here. Additionally, the fasteners can also be used reliably in places that are hard to access.

Rattle, vibration and earthquake proof

The DST fasteners withstand the highest loads without losing their accuracy of fit, securing or connecting function. Many of our products have been successfully tested for vibration and shock (DIN EN 61373) and earthquakes (GR-63-CORE, Issue 4).

High strength and friction locked

Our products guarantee high strength and high extraction torques, which are comparable to a screw connection.

Disassembly

Depending on the variant, the connection can be made by hand, with standard tools or special tools.

Electrical Conductivity

With the optional use of a grounding spring, the DST fasteners can not only provide a solid and reliable but also electrically conductive connection.

Detailed description

 

Principle of function

The tool-free assembly follows the simple principle of a drop lock, which we call "snap technology". The basis is formed by two individual parts: the so-called guide with angled clamping jaws as well as a spring, which sits in a window within the guide. These snap elements are inserted into the guide slot of a body and held in place by a stopper.

DST element in disassembled state

DST element in disassembled state

 

Assembly

When the fastener gets pushed through an installation opening, the inlet chamfer of the clamping jaws pushes the snap element back like a latch in the guide slot. The spring is tensioned in the process. As soon as the height of the clamping jaws is passed during insertion, the tensioned spring pushes the snap elements back out of the guide slot. This produces the typical "snap" sound, which also serves as a reliable quality check. The fastener is now mounted in the installation opening and holds the elements to be connected strongly together. In this way, different materials, whether sheet metal, wood or plastics of different thicknesses can be joined together without errors.

DST Assembly process

DST Assembly process

 

Strength

Once the fastener is in the correct position, it can withstand heavy loads and guarantees high strength and extraction torques comparable to a screw connection. If the application requires electrical conductivity, a fastener with optional grounding spring can be used.

Strength test – DTS

Strength test

 

Disassembly

A variety of DST products can be disassembled and assembled just as easily. Depending on the requirements of the application, different types are available, which can be easily removed by hand, with standard tools or with special tools. The disassembly option using special tools is explicitly recommended where vandalism and unauthorized removal are to be prevented. DST products offer complete flexibility for all kinds of applications in case of disassembly for repair or transport, and DST fasteners can be reused at any time.

Disassembly with tools – DST

Disassembly with tools

Product variants

Every project deserves its very own solution.

To simplify matters, we only refer to metal sheets in the product variants, but all product variants listed here are also suitable for wood and plastics.

DST fastener 9.7

Fastener with snap technology for connecting metal sheets.
​​​​​​​The metal sheets are connected by simply clipping them into the installation openings provided for this connection.

More

DST captive flex fastener 9.5

Captive flex fastener with snap technology for connecting metal sheets and closing doors and flaps.

More

DST captive fastener 9.5

Captive fastener with snap technology for connecting metal sheets and closing doors and flaps.

More

DST fastener 9.5

Fastener with snap technology for connecting metal sheets.
​​​​​​​The connection of the metal sheets is made by simply clipping them by hand into the designated installation openings.

More

DST captive fastener 9.5

Captive fastener with snap technology for connecting metal sheets and closing doors and flaps.

More

DST captive fastener 12.7

Captive fastener with snap technology for connecting metal sheets and closing doors and flaps.

More

DST fastener 8x15

Fastener with snap technology for connecting metal sheets.
​​​​​​​The connection of the metal sheets is made by simply clipping them into the installation openings provided for this purpose.

More

DST fastener 30x14

Fastener with snap technology for connecting metal sheets.
​​​​​​​The metal sheets are connected by simply clipping them into the provided installation openings. The riveted grounding spring guarantees an electrical connection between the sheet metal parts to be connected and to the fastener itself.

More

DST double fastener 30x10

Double fastener with snap technology for the firm connection of two sheet metal panels.

More

DST fastener 30x10

Fastener with snap technology for one side fixed and one side removable connection.

More

DST double fastener 30x10

Double fastener with snap technology for a one-sided fixed and a one-sided removable connection of two metal sheet panels.

More

Downloads

Find out more: related downloads.

If you would like to know more, simply download the relevant brochures.

Title Language Version File Download
DST
Innovative and high‑strength
Quick fastening solution
English 05/2021 2152 kB / PDF
English 05/2021 2152 kb / PDF

To view PDF documents, you will need the free Adobe Acrobat Reader.

More information

Would you like to discover more of the World of Joining?

Here you will find information about successful applications and related topics.