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Keep-Nut Anchors

KEEP-NUT™ press-in self-anchoring inserts by Specialinsert is a revolutionary press-in anchor insert commonly used for a number of applications including undermount sink installation, ventilated facades, cladding, and furniture. These small inserts are designed to install into a wide range of surfaces including granite, marble, quartz, solid surface, HPL, glass, fiber cement, and other compact materials.

The solid surface insert’s small size also lends itself to be installed into extremely thin surfaces while also being extremely strong. In addition, the Keep-Nut™ press-in self-anchoring insert is manufactured in stainless steel and it’s made of a threaded bush with a set of elastic crowns and a plastic ring for holding the complete set of parts together.

Advantages:

  • Simple hole preparation
  • Quick installation
  • No need for resins or adhesives
  • Radial force is produced only while the insert is under tensile load. The crowns spread the load into the parent material, allowing large loads to be carried
  • Thread stops before end of insert, avoiding extraction as a result of the use of an excessively long bolt

Applications:

Testing Data:

Material Type of Keep-nut Average pull-out load on a single insert (Kgs.)
Average pull-out load on a single insert (Lbs.)
Granite 20mm IM4S/__/H8.5 490,0 1,080.30
Marble 20mm IM4S/__/H8.5 385,0 848.78
Travertine 20mm IM4S/__/H8.5 225,0 496.10
Porcelain 10 mm IM2S/__/H6 150,0 330.80
Porcelain 20 mm IM4S/__/H8.5 350,0 771.80
Lapitec® 12 mm IM2S/__/H6 170,0 374.90
HPL 12mm IM4S/__/H8.5 541,5 1,194.00
HPL 8mm IM2S/__/H6 270,5 596.50
Dekton® 20 mm IM2S/__/H6 210,0 463.10
Corian® 12mm IM4S/__/H8.5 484,5 1,068.30
Corian® 10mm IM2S/__/H6 295,0 650.50
Hi-macs® LG 12 mm IM2S/__/H6 240,0 529.20
Agglomerate stone 15mm IM4S/__/H8.5 305,0 672.50

Installation

How to insert a Keep-Nut: Drill, Verify, and Insert.

KEEP-NUT™ press-in self-anchoring inserts by Specialinsert is a revolutionary press-in anchor insert commonly used for a number of applications including undermount sink installation, ventilated facades, cladding, and furniture. These small inserts are designed to install into a wide range of surfaces including granite, marble, quartz, solid surface, HPL, glass, fiber cement, and other compact materials.

The solid surface insert’s small size also lends itself to be installed into extremely thin surfaces while also being extremely strong. In addition, the Keep-Nut™ press-in self-anchoring insert is manufactured in stainless steel and it’s made of a threaded bush with a set of elastic crowns and a plastic ring for holding the complete set of parts together.

Advantages:

  • Simple hole preparation
  • Quick installation
  • No need for resins or adhesives
  • Radial force is produced only while the insert is under tensile load. The crowns spread the load into the parent material, allowing large loads to be carried
  • Thread stops before end of insert, avoiding extraction as a result of the use of an excessively long bolt

Applications:

Testing Data:

Material Type of Keep-nut Average pull-out load on a single insert (Kgs.)
Average pull-out load on a single insert (Lbs.)
Granite 20mm IM4S/__/H8.5 490,0 1,080.30
Marble 20mm IM4S/__/H8.5 385,0 848.78
Travertine 20mm IM4S/__/H8.5 225,0 496.10
Porcelain 10 mm IM2S/__/H6 150,0 330.80
Porcelain 20 mm IM4S/__/H8.5 350,0 771.80
Lapitec® 12 mm IM2S/__/H6 170,0 374.90
HPL 12mm IM4S/__/H8.5 541,5 1,194.00
HPL 8mm IM2S/__/H6 270,5 596.50
Dekton® 20 mm IM2S/__/H6 210,0 463.10
Corian® 12mm IM4S/__/H8.5 484,5 1,068.30
Corian® 10mm IM2S/__/H6 295,0 650.50
Hi-macs® LG 12 mm IM2S/__/H6 240,0 529.20
Agglomerate stone 15mm IM4S/__/H8.5 305,0 672.50

Installation

How to insert a Keep-Nut: Drill, Verify, and Insert.

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