S-5!® N1.5-Clamps for 1,5″ Nail Strip Profiles

The S-5!® N 1.5 and S-5-N 1.5 Mini clamps were designed for application on the popular 1.5″ (38mm) high nail strip metal roof profiles and roofing types with similar profiles. The S-5-N1.5 clamps boasts an angular throat that accommodates most 1,5″ nail strip profiles.

Maße Q-Klemme

The S-5!® N1.5 Clamps are made of aluminium and are available in 2 versions:

Fixed on 1,5″ (38mm)
Nail Strip Seam
Maße N1.5-Klemme
Sizes N1.5-Clamp

The N1.5-Clamp with two set-screws (and two M8 threads on top and one M8 stainless steel bolt) is used for heavy demands e.g. fall protection systems and in the ColorGard® snow retention. Packed with 30 pieces per box.

Maße N1.5-Mini

Sizes N1.5-Mini

The N1.5-Mini with one set-screw (and with M8 thread on top and M8 stainless steel bolt) are utilized in various instances when multiple clamps are required for the attachment of rigid objects to the seams, e.g. rail systems for solar installations, walkways, RoofTech tube snow retentions, signs, satellite dishes, cable trays, pipe and cable laying, etc.. Packed with 40 pieces per box.

The N1.5-Clamp and N1.5-Mini are each furnished with the hardware shown above. Each box also includes a bit tip for tightening setscrews using an electric screw gun. A structural aluminum attachment clamp, the N1.5-Clamps are compatible with most common metal roofing materials excluding copper. All included hardware is stainless steel. For flange solutions we offer three different stainless steel adapter plates. Download (pdf) Product Info Adapter Plates

Examples of Applications:

Projekt mit S-5-N1.5-Mini
Photovoltaic system on a 1.5″ (38mm) nail strip profile roof. Project Neerlandia in Utrecht, Netherland.

The S-5!® N1.5-Mini Clamps are available from our stock.

Die S-5!® N1.5-Clamp (with two set-screws) are not on stock available but can be shipped from S-5!, USA, after costumer request – even in small quantities and in short time with air freight.
Please call us for quote.

Different shapes of 1.5″ (38mm) high nail strip profiles:

Profil 1.5 nail strip

To Install the N1.5-Clamp and N1.5-Mini

1. Partially thread the setscrews into the clamp by hand.

 2. Position clamp at desired location along the seam as shown in illustration on the right.

 3. Make sure the toe of the clamp engages the female part of the seam as shown in the illustration on the right.

4. Tighten the setscrews using a screw gun* and the included screw gun bit tip. Setscrews should be tensioned and re-tensioned as the seam material compresses, i.e. tighten the first setscrew, then the second; then repeat until each setscrew achieves the recommended torque. The setscrews will dimple the seam material but will not penetrate it. When relying on published load values, setscrew tension should be verified periodically using a calibrated torque wrench as indicated below to ensure the tool is consistently achieving the proper torque range.

Once installed correctly, these clamps require no maintenance or reinspection for the life of the roof.

5. In the area where the clamps are fixed, the nail-strips should be screwed on additionally, without hindering the thermal elongation.

6. For critical attachment applications utilizing an M8-1.25 X 16 mm Hex Flange Bolt, tighten the included M8 bolt to 160 inch pounds (13 foot pounds).

Please note in general:

The suitability for the intended use is checked by the user himself. If technical details are not described separately, this does not release the company carrying out the work from its obligation to check the individual case and clarify the correct technical facts beforehand.

It must be ensured by the planner and the specialist company responsible for the installation that the planning and installation are carried out strictly in accordance with the national and site-specific building regulations, occupational safety and accident prevention regulations, standards and environmental protection regulations. Every person who plans and installs with our products is obliged to inform himself independently about all rules and regulations for technically correct planning and installation and to observe them. This also includes obtaining the current status of the necessary rules and regulations.

S-5!® Warning! Please use the products responsibly! Visit our website of S-5! (www.s-5.com) or contact your S-5! distributor for available load test results. The user and/or installer of these parts is responsible for all necessary engineering and design to ensure the S-5! clamps have been properly spaced and configured.

Notice to S-5! users: Due to the many variables involved with specific panel products, climates, snow melt phenomena, and job particulars, the manufacturer cannot and does not express any opinions as to the suitability of any S-5! assembly for any specific application and assumes no liability with respect thereto. S-5! products are tested for ultimate holding strength on various profile types and materials. Visit www.S-5.com for more details.

The user and/or installer bears also the responsibility not only for the professional installation, but also for the roof on which he is mounted. The user and/or installer must always clarify in advance the application possibilities and application of our products in connection with the other used materials and products at the single project.

Mounting the clamps take care that the set screws and bolts are tightened with the right screw tension as written in each installation instruction (also available under “Information” and on the homepage of S-5!: www.s-5.com). Please make sure that the load coming into the clamp will be taken by the structure of the roof. When planning the project the calculated loads should not only include wind, snow and planned use. The makers and supplier of S-5!® clamps make no representations with respect to these variables. The user and/or installer of these parts is responsible for all necessary engineering and design to ensure that the clamps has been properly spaced and configured. It is the responsibility of the user to verify this information, or seek assistance from a qualified design professional or stress analyst, if necessary.

Assumption is that the determination has been made that the roof to which the S-5! clamps will be attached is structurally adequate. Any loads imposed on the S-5! clamps will be transferred to the panels. Panel seams must have sufficient flexural strength to carry these loads. Panels must also be adequately attached to the building structure, and the structure must be sufficient to carry these loads. The makers and distributor of S-5! clamps make no representations with respect to these variables. It is the responsibility of the user to verify this information, or seek assistance from a qualified design or structural professional, if necessary.

The S-5! clamp is a handy gadget for a great many uses, but will not perform miracles. PLEASE USE THE PRODUCTS RESPONSIBLY!

For critical installations, inquire for specific test data of ultimate tensile load on specific panel materials and seam types. When tabled values are used, screw tensions should be verified and factors of safety should be used as appropriate. The manufacturer expresses no opinions as to the suitability of the S-5! for any specific application or project condition.


The respective installation instructions must always be observed. However, the respective installation instructions do not release the executing company from the obligation to clarify in advance the possible uses and applications of our products, also in connection with the other materials used, on the individual object. RoofTech GmbH and S-5!® – Metal Roof Innovations Ltd. do not assume any responsibility for assembly and applications.

We assume no liability for errors on the website. Pictures and drawings can represent development stages, which are not available in such a way. The contents, photos and graphics may only be used or passed on after consultation with RoofTech GmbH.

The installation instructions and more information to download under “Information”. Load test results, CAD details, metallurgical compatibilities, specifications and additional information are available on the homepage of S-5!: www.s-5.com.

Open in new tab or direkt download (pdf): RoofTech – S-5! General Notes.

The photographs and drawings herein are for the purpose of illustrating installation, tools and techniques, not system designs. S-5! products are protected by international patents of Metal Roof Innovations Ltd. Link to S-5! Therms of Use

No liability for printing errors. Technical changes subject to modification. All rights reserved.
© 2019 Copyright RoofTech GmbH and S-5!® – Metal Roof Innovations Ltd..