Marutex stainless drill screws and related products
Stainless drill screws and related products
Stainless drill screws for specialist metalwork and adjacent applications
Our stainless drill screws page for related products brings together a tighter, more specialist part of the Marutex offering. It is aimed at jobs where the main roofing, cladding or sandwich-panel families are not the right fit, and where you instead need the correct screw for ventilation ducts, pre-drilled light section steel or more general self-drilling metalwork.
This page stays focused on that related-products section only. In the range below, you can quickly separate FC self tapping C-thread screws, TG ventilation duct screws and Unidrill self-drilling screws, then compare head format, drill capacity and clamp length before going deeper in the catalogue. If you need more support, our guides on drilling capacity, stainless steel and technical description are the most relevant starting points.
What is included in our stainless drill screws and related range
FC self tapping C-thread screws
Choose our FC self tapping C-thread screws when the job is built around pre-drilled light section steel and you need a product meant for that fastening logic rather than a general drill screw. This is the stronger fit for details such as roof safety and solar panel mounting in lighter steel sections, especially when the fixing method is already defined around pre-drilled holes.
See details and sizes for our FC self tapping C-thread screws on page 12 in the catalogue.
TG screws for stainless ventilation ducts
Use our TG ventilation duct screws when you are joining thinner stainless duct materials and want a screw adapted to ventilation-system details. This is the right choice when duct-specific performance matters more than using a broader all-round screw, since TG is made for ducts and details and fulfills tightness class D.
See sizes and details for our TG ventilation duct screws on page 12 in the catalogue.
Unidrill self-drilling screws
Choose our Unidrill self-drilling screws when you need a more general drilling option for lighter metalwork and related installation work. This subgroup gives you both pan head and hexagon head versions, making it the better option on this page when the application is broader than ventilation-specific TG screws or pre-drilled FC fastenings.
See head types, sizes and drill capacities for our Unidrill screws on page 12 in the catalogue.
Detailed stainless drill screw data in our catalogue
The catalogue page below is the fastest way to compare the exact products in this narrower related-products section. It brings together FC self tapping screws, TG ventilation duct screws and Unidrill self-drilling screws on one page, so you can review the subgroup before drilling into the size and capacity details.
Use it to check head format, drill capacity, clamp length and which product is best aligned with the way the joint is being made. That is especially useful here, because this page is intentionally narrower than the main Marutex families and is meant to help you choose the right related product faster.
Need help choosing the right related stainless screw?
If you are deciding between a ventilation duct screw, a C-thread screw or a more general self-drilling screw, we can help narrow it down quickly. Our team helps contractors, fabricators and technical buyers match the screw to the substrate, hole strategy and installation method, so the product fits the detail instead of slowing the job down.
How do I choose between FC self tapping C-thread screws and Unidrill self-drilling screws?
Choose FC when the fixing is based on pre-drilled light section steel and you want a screw intended for that fastening method. Choose Unidrill when you need a more general self-drilling screw for broader metalwork uses. The key difference is whether the application is built around pre-drilled fastening logic or a more general drill-screw installation.
When should I use TG ventilation duct screws instead of a general self-drilling screw?
Use TG when the job is specifically about joining ducts and details in ventilation systems. That matters because TG is the subgroup on this page that is explicitly adapted to thinner stainless ventilation materials and fulfills tightness class D, which makes it the more precise choice for ductwork rather than treating the job as general sheet-metal fastening.
Do all products on this page require pre-drilling?
No. This page contains both self tapping and self-drilling products, so the installation method depends on the subgroup you choose. FC is the group to look at when the application is based on pre-drilled holes, while TG and Unidrill are the drill-screw side of the page. Checking that difference early helps avoid choosing the wrong installation workflow.
What matters most when choosing head style on this page?
The main factor is how the screw needs to sit and how it will be installed in the detail. On this page, the related range includes both pan head and hexagon head options, so the best choice depends on the access, tool setup and type of joint you are making. When fit, finish or installation access matters, the head style should be treated as a selection factor rather than an afterthought.
What should I check before choosing drill capacity and clamp length?
Start with the thickness of the materials you are fastening and whether the joint is pre-drilled or self-drilled. Then make sure the screw’s clamp length and stated drill range actually match the build-up. That prevents the common mistake of picking a screw that belongs to the right family in general, but not to the exact material thickness or joint detail in front of you.
Can Unite help us choose between these related products and the main Marutex families?
Yes. That is often the most useful support on a page like this, because the real decision is sometimes whether the job belongs in this related-products section at all or whether it should move to one of the larger Marutex families for sheet, steel beam or sandwich-panel fastening. We can help you sort that out before you order, which usually saves both time and rework.