Self-Tapping Undercut Anchors
Rotary Installed Back Anchors for Stone, Ceramic and Facade Systems
VALTOR supplies self-tapping undercut anchors for concealed mechanical fixing of stone, ceramic and facade panels. Rotary installation engages the prepared back hole while the compact undercut section creates a positive mechanical lock inside the panel.
Product Overview
Self-tapping undercut anchors are specialized back anchors for stone, ceramic and facade panels where the visible face must remain free of fasteners. Installation takes place from the rear of a specially prepared blind hole, creating a concealed connection for facade brackets and support hardware.
The rotary-installed anchor combines controlled engagement of its working sleeve or thread geometry with a shaped undercut region in the hole. The lower section seats into the enlarged cavity to form a positive mechanical interlock, rather than functioning as a conventional concrete expansion anchor.
304 and 316 stainless steel options support architectural cladding, stone curtain walls and project-based facade systems. Selection must match panel material, thickness, back-hole geometry, anchor dimensions, installation tooling, environmental exposure and the engineered facade design.
Technical Specifications
Exact dimensions and installation parameters must be verified for the selected anchor and panel. No universal load, panel-thickness or certification value applies across different materials and geometries.
Self-Tapping Thread & Undercut Locking Principle
304 / 316 Stainless Steel & Corrosion Resistance
304 / A2 stainless steel is suitable for general architectural and industrial facade applications where normal corrosion resistance is required. 316 / A4 stainless steel is commonly selected for coastal buildings, marine influence, high humidity and corrosion-sensitive facade projects.
Material grade must be selected with the full service environment in mind, including atmospheric exposure, adjacent metals, cleaning chemicals, expected service life and project specification. Stainless steel is corrosion-resistant, not universally corrosion-proof.
Facade Project Customization
Quality Control & Documentation
Applications
Self-tapping undercut anchors are used for concealed mechanical fixing in architectural facade and panel systems.
Concealed rear fixing of granite, marble and suitable natural-stone facade panels.
Back anchoring for ceramic and architectural panels requiring hidden mechanical attachment.
Corrosion-resistant concealed connections between facade panels and engineered support frames.
Hidden fixing for stone decoration, feature walls and premium architectural installations.
Customized stainless steel back anchors supplied to drawings, dimensions and project requirements.
Frequently Asked Questions
What are self-tapping undercut anchors?
They are concealed mechanical back anchors for stone, ceramic and facade panels, combining rotary engagement with shaped locking in a prepared undercut hole.
What materials can these anchors be used with?
They are commonly specified for natural stone, granite, marble, ceramic and suitable facade panels, subject to verified panel and system design.
What stainless steel grades are available?
304 / A2 and 316 / A4 stainless steel options are available according to environmental exposure and project requirements.
Can VALTOR supply customized sizes?
Yes. Diameter, length, connection thread, sleeve and undercut geometry, material and packaging can be reviewed against drawings or samples.
What information is required for quotation?
Provide panel material and thickness, prepared-hole geometry, anchor dimensions, installation method, bracket interface, quantity and project requirements.
Related Products
Send the panel material, thickness, prepared-hole geometry, anchor dimensions, stainless grade, quantity and facade project requirements.