The Keepnut for stones has a double-crown construction providing stronger retention than single-crown alternatives, while the Ø20 mm flange increases the support area on the surface. This makes it a versatile solution for medium-duty fastening where both improved grip and flange support are beneficial. Like the rest of the KEEP-NUT® range, it installs into a simple blind hole without adhesives, resins, or special installation tools.

Its key benefits are:

• Stronger hold thanks to double-crown anchoring
• Flange provides increased support area
• Easy press-in installation
• Good balance of compact size and pull-out performance
• Suitable for a wide range of stone and solid surface applications

Applications

Recommended for medium-duty applications where flange support and stronger M4 retention are important, including:

• wall cladding and decorative interior panels
• furniture production and joinery details
• custom countertops and vanity units
• sanitary installations and bathroom furniture
• retail fixtures, displays, and commercial interiors
• renovation work requiring fast concealed fastening
• technical panel assemblies in stone and solid-surface materials

COMPATIBLE MATERIALS

Suitable for a broad range of compact and architectural materials, including:

• Natural stone: marble, granite, travertine, limestone, slate, quartz, and other stone surfaces
• Sintered stone: Lapitec®, Dekton®, Neolith®, and other ultra-compact slabs
• Solid surface materials: Corian®, Hi-Macs®, Krion®, Staron®, Okite®, Betacryl®, and similar brands
• Porcelain and ceramics: porcelain gres, technical ceramic slabs, and compact ceramic panels
• High-pressure laminates: HPL and compact laminate boards
• Engineered materials: agglomerate stone, engineered stone, and mineral-based compact composites
• Other solid materials: glass and similar dense panels used in interior and architectural projects