Keep-Nut IM-S stainless steel 316 with ETA
Keep-Nut® IM-S in Stainless Steel 316 with ETA
Self-Anchoring Threaded Insert for Natural Stone, HPL & Ceramic Panels
Quick Installation • No Adhesive • ETA-Certified Stainless Steel 316L solution
Product Overview
The Keep-Nut® IM-S in stainless steel 316L (ETA 15/0615 certified) is a knock-in insert designed for hidden mechanical fastening of ceramic, HPL or natural stone panels starting from 8.5 mm thick.
It requires no undercut drilling or adhesive — simply drill a standard Ø 12 mm hole and press the insert into place.
The IM-S series is available in M4 to M6 thread sizes and offers exceptional corrosion resistance for outdoor applications.
Description
Technical Features & Benefits
Easy and Fast Installation
No undercut or adhesive required — only a standard cylindrical hole. Installation is quick and secure, even in delicate panels.
Protection of the Visible Surface
The internal thread does not run completely through the insert, preventing any damage to the decorative surface caused by overly long bolts.
Premium ETA-Certified Material
Made from high-quality stainless steel 316L and ETA-certified, the Keep-Nut® IM-S ensures durability and strength even in harsh environments such as ventilated façade systems.
Applications
Ventilated Façade Systems
Perfect for hidden mechanical fastening of natural stone or ceramic façade panels without visible fixings or adhesives.
Interior & Furniture Design
Ideal for decorative panels, solid surfaces, or furniture components requiring clean aesthetics and long-lasting fastening.
Thin or Fragile Panels
When gluing or undercut drilling isn’t possible — for example, due to limited edge distance or fragile materials — the knock-in Keep-Nut® offers a reliable and elegant alternative.
Installation & Technical Support
Installation Steps
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Drill the hole according to the specified diameter and depth (Ø 12 mm).
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Check the dimensions using a Go/No-Go gauge.
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Insert the Keep-Nut® using a hammer or the PKN installation tool (recommended for delicate panels).
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Remove the tool — the insert is ready for use.
Samples & Logistics
Free test samples are available. Juno Industries supplies from stock or directly from the manufacturer. Testing in the actual panel material is recommended.
Why Choose Juno Industries
As a European specialist in metal threaded inserts, Juno Industries offers the Keep-Nut® IM-S in stainless steel 316L with ETA certification, combining expert support and fast delivery across the EU (mainly Belgium, France, the Netherlands and Spain). Reliable quality and technical expertise for professional anchoring solutions.
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keep_nut_im_s_inox316l.pdfFrequently asked questions about Keep-Nut IM-S stainless steel 316 with ETA
Do you need adhesive or undercut drilling?
No — the Keep-Nut only requires a standard cylindrical hole; no undercut drilling or adhesive is needed.
How is the Keep-Nut installed?
Steps: drill the hole according to the specifications (diameter + depth), check the dimensions using a Go/No-Go gauge, screw the insert onto the PKN tool, hammer it into the hole, and then unscrew the PKN tool — the insert is now ready for use.
For non-sensitive and/or scratch-resistant panels, the Keep-Nut can simply be hammered directly into the prepared hole.
In which materials can the Keep-Nut® be used?
Examples include granite, marble, travertine, fiber cement, HPL, solid surface, tempered glass, and composite panels. In some fiber cement boards, the insert can also be used, but testing is recommended first.
What is the Keep-Nut® insert?
It is a press-in threaded insert that creates a permanent internal stainless steel thread in panels made of natural stone, composite, HPL, glass, and other solid-surface materials — requiring only a standard cylindrical hole.
