Connecting and fastening system isolated
against vibration and noise
SNAPLOC? Decoupling plug-in connection
The benefits for the customer
The main applications in the general industry
The main applications in the automotive industry
At the beginning, we had the task of developing a connection consisting of a maximum of two elements.
The function was to isolate against vibration and noise,and to achieve a considerable reduction in assembly
time and thus save costs in production.In this respect, the fastening of engine covers was
among the first projects. As the development progres-sed the SNAPLOC? brand gained in importance.
SNAPLOC? is a two-part system – ball stud and coupling – for fast installation.
The coupling is inserted into the bottom of the respective cover in a specially designed mounting and held in a closed-form. The ball stud can be screwed into various mating components, manifolds, brackets and motor blocks.
Simply push-fit to connect and pull apart to detach. SNAPLOC? provides optimal fastening.
SNAPLOC? is based on the simple principle of a snap connection. A ball socket is formed within the coupling, in which the ball stud can snap into as a counter-piece.
The special features of SNAPLOC?: the connection compensates tolerances and isolates vibration and noise.
SNAPLOC? ball studs are available in six basic designs. They may be distinguished in the form of their fastening.
■ Ball studs with external thread
■ Ball studs with internal thread
■ Ball studs with UNITEC? K’ in K’ (plastic in plastic) thread
■ Ball studs in clip form
■ Ball studs adhesive version
■ Ball studs for injection moulding
Four product variations are currently available which are defined by the characteristic feature of the ball head
diameter (available are ball head diameters 7, 8, 10 and 15 mm).
The following parameters are variable – shaft length, thread diameter and thread length, material, colour, material of the blank and various drives, whereby two drives may also be realised per ball stud.
The various ball studs may be combined, in all ways, with the various coupling designs within one product size.
Ball studs in metal/plastic combination
SNAPLOC? ball studs with external thread
The ball studs with metallic external threads are available with varied thread forms. This covers for example metrical threads, American/
British threads, self-tapping threads etc., in compliance with the corresponding norms or also special variants.
For the corresponding dimensions please refer to Pages 12 – 17.
SNAPLOC? ball studs with internal thread
The ball studs with metallic internal threads are available with varied thread forms. Some examples are metrical threads, American/British
threads, etc. in compliance with the corresponding norms or alsospecial variants.
The corresponding dimensions may also be seen on Pages 18 – 19.
Solid plastic ball studs
SNAPLOC? ball studs with UNITEC? K’ in K’ thread (plastic in plastic)/direct screw connection
Ball studs with self-tapping or self-grooving plastic threads can be inserted in plastic parts.
A mounting thread is grooved in a locating hole by the UNITEC? K’ in K’ thread of the ball stud developed and patented by B?llhoff. The formed thread is self-locking and can, at the same time, be used as a repeat screw connection.
Thus screw clamping and repeat screw connection are realised without an additional screw locking device.
The corresponding dimensions may also be seen on Pages 20 – 21.
SNAPLOC? ball studs in clip form
Due to the special geometry of the parts, these ball studs may be
fastened by simply being clipped in an opening. A fastening solution
which is highly suitable for applications in which a thread or bolt cannot
be inserted into the part. For the corresponding opening geometries
and plate thicknesses please refer to the technical
information on Page 22 – 23.
SNAPLOC? ball studs adhesive version
The adhesive version is suitable where neither screwing nor the application of bore holes to the mating components is possible.
SNAPLOC? couplings are available in three basic designs. They vary in the type of fastening.
■ Couplings for mounting dome
■ Couplings for plate fastenings
■ Couplings for adhesive version
Four product variants are currently available which are defined through the characteristic feature of the ball head diameter of the ball stud. Available are ball head diameters 7, 8, 10 and 15 mm.
The following parameters are variable – external diameter, collared/collarless, collar depth, material, colour and other special designs.
The various couplings may be combined, in all ways, with the various ball stud designs within one product size.
SNAPLOC? couplings for mounting dome
The couplings for mounting domes are designed so that they can be inserted automatically or manually into the corresponding locating holes, without requiring any additional tools. Thus assembly is possible
within a short time.
For the corresponding dimensions please refer to
Pages 24 – 31.
Example: view of assembled condition
SNAPLOC? couplings for plate fastenings
Due to the parts geometry, these couplings may be mounted by
simply being pushed into a specified bore or square opening.
The corresponding bore diameters or opening geome-
tries and plate thicknesses may be seen on Pages 32 –
Example: view of assembled condition
Ball studs with metallic external thread or metallic internal thread
Depending on the long-term heat resistance, chemical-resistance, requirements from the strength and/or stiffness glass fibre-reinforced polyamides are used.
Depending on the strength requirement, there are various metallic materials available, for both external as well as internal threads. In the case of ball studs with metallic external threads the metal studs are encapsulated by injection moulding.
Various procedures are suitable for producing the ball studs with metallic internal thread. One process is over- molding the internal thread insert. In the other process the plastic ball studs are moulded and subsequently fitted with a metallic insert. This may be carried out through mechanical insertion or embedding.
The surface requirements for the metallic materials are customized to meet customer requirements. Principally, all known types of surfaces can be applied on the metal blanks.
Please contact us.
Ball studs made of solid plastic with UNITEC? K’ in K’ thread
Various ball stud materials can be used depending on the part materials. Furthermore, the suitable solid plastic bal studs are selected for the corresponding material depending on the requirements concerning functionality, defined long-term heat resistance, required strengths and mechanical properties (torques, extraction force).
Please make use of our consulting service.
Ball studs made of solid plastic in clip form
High stiffness, mechanical strength, very high impact strength or notched impact strength and sufficient heat resistance are necessary for the functionality of the ball studs in clip form. Corresponding materials will be selected for this ball stud type depending on the requirements.