Bonding Stud

Bonding stud with a plain shank: the shank locates and the bonded base carries the load into the panel.

Key specifications

MaterialCarbon Steel / Stainless Steel
Installationstructural adhesive after surface preparation
StandardGB/T 7124 (lap shear), customer drawing
Typical substratecomposites, thin housings, decorative panels
Key inspectionspull-off/shear strength, bond-line thickness, ageing

Request a quote Request samples

Product overviewOverview

Load passes through the adhesive layer: it spreads tensile and shear forces from the fastener base into the substrate, avoiding the stress concentration a drilled hole creates. A bonded joint carries load in shear across the adhesive layer, so the base area and the bond-line thickness matter more than the stud diameter. The surface preparation decides the result: an unprepared or oily surface gives a bond that looks sound and fails at a fraction of the design load.

Material: Carbon Steel / Stainless Steel. It is bonded with structural adhesive after the surfaces are prepared.

Key featuresFeatures

Bond strength is set by surface preparation, not by stud size.
No hole and no weld, so coatings and sealing remain intact.
Load transfers through the adhesive in shear, avoiding hole stress concentration.
Suits thin sheet, composites and non-weldable substrates.

Typical applicationsApplications

Composite panel attachments
Thin-wall housing hardware
Rail interior panels

Selection notesSelection

Specify the surface preparation and the bond-line thickness together with the stud; testing a bonded stud without controlling either gives scatter that cannot be interpreted.

Frequently asked questionsFAQ

Why do bonded studs fail at low load?

Almost always surface preparation or bond-line thickness. Contamination and uneven adhesive thickness both reduce shear strength, and the failure looks like an adhesive failure rather than a design problem.

What matters during installation of the Bonding Stud?

Bond it with structural adhesive after preparing the surfaces. Bond strength is set by surface preparation, not by stud size.

Specifications

Material	Carbon Steel / Stainless Steel
Adhesive	Epoxy / Cyanoacrylate
Standard	GB/T 7124 (lap shear), customer drawing
Installation	structural adhesive after surface preparation
Typical substrate	composites, thin housings, decorative panels
Key inspections	pull-off/shear strength, bond-line thickness, ageing

Manufacturing and inspection

Pull-off and shear tests are sampled per lot, recording whether failure is interfacial or cohesive.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.