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S-5-Z™ Clamp

Designed for “Bulb”-Shaped Roof Profiles ≤ 7/8” (22 mm) in Diameter.

S-5-Z & Mini Brochure

Seeking a Zip-Rib®, Bemo, Kalzip® (or Similar “Bulb” Seam) Mounting Solution?

The S-5-Z (“Z” stands for Zip-Rib) is specially designed for round “bulb” seam configurations. Mount snow guards and other heavy-duty applications to “bulb” seam configurations, such as Zip-Rib®, BEMO, Kalzip® and other similar profiles. Easily install the two-piece clamp anywhere along the length of the rib.

Minis Available

The Z Mini clamp is a more economical solution for lighter-duty attachments where Herculean holding strength is not required.

The Z Mini clamp is a bit shorter than the standard Z with one setscrew rather than two.

All standard and Mini clamps undergo rigorous load testing. Negative load normal-to-seam testing (pull-up) is performed on all Mini clamps, and parallel-to-seam testing (drag load) is performed on all standard clamps.

Be sure to check out the many other features on the clamp overview page.


Other options for this seam profile:

Sometimes the intended “bulb” diameter is larger than the specified dimension for the Z due to seam-closing error. This can be corrected by hand, closing the seam to its proper dimension at clamp locations.

Alternatively, the S-5-Q can be used when the (bulb) seam dimension is too large for the Z. The Q is designed to fit larger “bulb-shaped” profiles.

When a nut-and-bolt connection is required, see the S-5-ZF Mini.

Some bulb seam profiles utilize a stationary clip (or “halter”) to anchor the roof to the structure. This is typical of BEMO and Kalzip. (ZipRib generally utilizes a moveable two-piece clip.) When a stationary “halter” is used for roof attachment, the halter location must be avoided when using the S-5-Z. Alternatively, the S-5-ZH can be used at halter locations, preserving roof design integrity.

S-5-Z standard metal roof clamp


Minor Box:

$7.96 Qty: 30 | $6.76 (Mini) Qty: 50

Master Box:

$7.70 Qty: 90 | $6.54 (Mini) Qty: 150

*Pricing above is per clamp in USD. Prices vary based on region and other factors. Pricing improves with order quantity. Broken boxes may be subject to handling charges. Call your Authorized S-5! Distributor for current pricing.

Use Our Project Configurator

S-5-Z standard metal roof clamp

The S-5-Z Works for the Following Roofs:


Bulb-Type Standing Seam

Product Specifications:


S-5-Z Mini


  • Specially designed to fit Zip-Rib®, BEMO, Kalzip® and similar
    profiles with a round “bulb” seam configuration and seam diameters
    of ≤ 7/8” (22 mm)
  • Installs easily anywhere along the rib using the two-piece clamp design
  • Snow retention and other heavy-duty applications
  • Two T-30 Torx round-point setscrews (Torx bit tip provided)
  • One M8 bolt included

Does the S-5-Z Fit Your Roof Profile?


How to Install the S-5-Z Clamp on Your Roof Profile*

Using the ergonomic finger grip “tail” of the insert, position the insert at the desired location against the base of the seam and just below the bulbous portion (either side of the seam). Rotate the clamp into place over both the seam and insert. You can hold this assembly in place with one finger, while tightening the roundpoint Torx Drive (T30) setscrews to the specified tension. Then, affix ancillary items using the bolt (provided with standard Z clamp; sold separately for the Z Mini).

*See more detailed installation instructions in the PDF download below.

*S-5! clamps may be moved in the event of initial misplacement. However, due to the ensuing oxidation process which acts as a natural thread lock, we can express no opinion to the performance of a clamp once it has been removed and reinstalled or the ability to remove the clamp after this process has occurred.

S-5-Z Installation Instructions


Have More Questions?

Submit your information by clicking the form below, and we’ll get back to you as soon as possible.


How are S-5! clamps tested?
How much load will Mini (one setscrew) clamps hold in the parallel load orientation?
How do I know what clamp to use for my roof if I don't know my roof manufacturer and profile?
What profiles will S-5! clamps not fit?
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