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Keep-Nut IM-S stainless steel 303

Keep-Nut IM-S stainless steel 303
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Keep-Nut® IM-S in Stainless Steel 303

Self-Anchoring Threaded Insert for Natural Stone, HPL & Ceramic Panels

Quick Installation • No Adhesive Needed • High-Quality Solution

Product Overview

The Keep-Nut® IM-S in stainless steel 303 is a knock-in insert from Specialinsert® designed to create a strong internal thread in hard or brittle materials such as stone, HPL, or ceramic.
It requires no special drilling or adhesive — simply drill a 12 mm hole and press the insert into place.
The IM-S series is available with M4, M5 and M6 internal threads, made from stainless steel 303. The versions with 2 or 4 crowns are also available in stainless steel 316 with ETA certification for façade applications.

Description

Technical Features & Benefits

Simple and Fast Installation

The IM-S insert only requires a standard 12 mm hole. It can be installed using a hammer or a dedicated tool (recommended for thin or fragile panels). The black PKN tool ensures a secure and scratch-free installation.

Surface Protection & Reliability

The internal thread does not run completely through the bushing, preventing damage to the visible surface if a screw is too long — ideal for thin panels or decorative materials.

Durable and Versatile

Made from corrosion-resistant stainless steel 303, Keep-Nut® IM-S is suitable for marble, granite, travertine, fiber cement, HPL, solid surface, composite materials and even tempered glass. Performance should be tested in the actual panel material.

Applications

Ventilated Façade Systems

Ideal for ventilated façade panels where strong, hidden mechanical fastening is needed without adhesive.

Interior & Furniture Design

Perfect for interiors, furniture, or sanitary applications where clean aesthetics and hidden fixings are desired.

Thin or Sensitive Panels

When gluing or undercut drilling is not suitable — for example, on thin or fragile panels — the knock-in Keep-Nut® offers a fast, elegant solution.

Installation & Technical Support

Installation Steps

  1. Drill the hole to the specified diameter and depth.

  2. Verify with a Go/No-Go gauge.

  3. Screw the insert onto the PKN tool (recommended for delicate panels).

  4. Hammer the insert into place.

  5. Unscrew the PKN tool — the insert is ready for use.

Samples & Logistics

Free test samples are available. Juno Industries provides fast delivery from stock or directly from the manufacturer. Minimum order quantities apply.

Why Choose Juno Industries

As a European specialist in metal threaded inserts, Juno Industries supplies the Keep-Nut® IM-S in stainless steel 303 with expert support and fast delivery mainly throughout Belgium, France, the Netherlands, and Spain. Reliable quality, technical expertise and efficiency for professional anchoring solutions.

Frequently asked questions about Keep-Nut IM-S stainless steel 303

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.

Do you need adhesive or undercut drilling?

No — the Keep-Nut only requires a standard cylindrical hole; no undercut drilling or adhesive is needed.

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.



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