How to fix gratings correctly
Gratings are used in many areas, for example as covers for light shafts, steps or as floor coverings in industrial halls. Good fastening is essential to ensure that gratings are secure and stable.
Types of grating fastenings
There are two main types of grating fastenings: clamps and direct bolting.
Clamps
Clamps are the simplest and most cost-effective way to attach gratings. They are hooked into the mesh of the grating and secured with a screw or bolt. Clamps are available in different sizes and designs so they can be used on gratings with different mesh widths and shapes.
Hook screws
Hook bolts enclose a support structure and secure the grating against shifting and lifting. Hook bolts are combined with a clamp top. Depending on the design of the hook bolt, a screw or nut is required for fastening.
Direct mount fastenings
Direct mount fastenings are screwed directly into the grating or the subsurface. They offer a high level of stability and safety, but are also somewhat more expensive than clamps. Direct screw connections are available in various designs, for example as drilling screws or set bolt fastenings.
Fastener sets
Fastening sets are combinations of clamps or hook screws that are tailored to the application and are provided pre-assembled or loose as a set.
UPPER PART 15, hot-dip galvanized
Clamp upper part for mesh pitch 60/66/68 mm Cross bar spacing at least 31 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€1,399.746000 / 1000 piece)
UPPER PART 18, hot-dip galvanized
Clamp upper part for mesh pitch from 15 mm For mesh pitch 15 mm: bearing bar thickness up to 3 mm Cross bar spacing at least 19 mm For assembly with slotted cheese head screws DIN 84 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€669.229000 / 1000 piece)
UPPER PART 21, hot-dip galvanized
Safety clamp upper part with locking device for mesh pitch 33/34 mm Cross bar spacing at least 26 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€1,701.056000 / 1000 piece)
UPPER PART 22, hot-dip galvanized
Clamp upper part for mesh pitch 33/34 mm Cross bar spacing at least 18 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€350.675000 / 1000 piece)
UPPER PART 23, hot-dip galvanized
Clamp upper part, mounted across 2 cross bars Mesh size at least 30 mm Cross bar pitch max. 12 mm For assembly with hexagon socket countersunk screws DIN 7991 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€316.436000 / 1000 piece)
UPPER PART 23S, hot-dip galvanized
Clamp upper part, mounted across 2 cross bars Mesh size at least 30 mm Cross bar pitch max. 22 mm For assembly with hexagon socket countersunk screws DIN 7991 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€385.556000 / 1000 piece)
UPPER PART 28, hot-dip galvanized
Clamp upper part for mesh pitch 41/44/45 mm Cross bar spacing at least 18 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€729.186000 / 1000 piece)
UPPER PART 29, hot-dip galvanized
Universal plate upper part for mesh pitches from 19 to 45 mm Slightly raised bearing surface on the grating Cross bar spacing at least 10 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€1,190.267000 / 1000 piece)
UPPER PART 4, hot-dip galvanized
Plate upper part for mesh pitch 33/34 mm With drain hole and slip resistance Cross bar spacing at least 30 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€779.782000 / 1000 piece)
UPPER PART 5, hot-dip galvanized
Clamp upper part for mesh pitch 33/34 mm Cross bar spacing at least 23 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€357.381000 / 1000 piece)
UPPER PART 6, hot-dip galvanized
Clamp upper part for mesh pitch 33/34 mm Deep-drawn by 5 mm to recess the screw head Cross bar spacing at least 26 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€531.925000 / 1000 piece)
UPPER PART 74, hot-dip galvanized
Clamp upper part for GRP gratings, mesh pitch 38/40 mm Cross bar spacing at least 26 mm Web width max. 6 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€689.330000 / 1000 piece)
UPPER PART 8, hot-dip galvanized
Safety clamp upper part with locking device for mesh pitch 33/34 mm Cross bar spacing at least 16 mm For assembly with hexagon head screws DIN 933 M8 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€1,813.481000 / 1000 piece)
UPPER PART 81 for sheet-metal profile gratings, hot-dip galvanized
Content: 1 piece (€435.216000 / 1000 piece)
UPPER PART 86 with hole 7.5 mm, hot-dip galvanized
Plate upper part for mesh pitch 22/25 mm Very low projection above the grating Cross bar spacing at least 18 mm For assembly with M6 countersunk screws DIN 7991/ISO 10642 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€580.403000 / 1000 piece)
UPPER PART 86 with hole 9 mm, hot-dip galvanized
Plate upper part for mesh pitch 22/25 mm Very low projection above the grating Cross bar spacing at least 18 mm For assembly with M8 countersunk screws DIN 7991/ISO 10642 Hot-dip galvanized to DIN EN ISO 1461 Grating fastenings are currently not subject to any CE standards, but must be used in accordance with the legal provisions applicable to the application.
Content: 1 piece (€578.186000 / 1000 piece)
Which grating fastening is the right one?
The choice of the right grating fastening depends on various factors, such as the size and type of grating, the support of the grating and the safety requirements. In addition, the intended use and location are decisive for the selection of the correct corrosion protection.
Safety fastening in fall areas
In areas where there is a risk of falling, an additional safety fastening is required. This prevents the grating from being moved or lifted off. Various fastening options are available for securing light shaft gratings, for example as chains, brackets or locks.
Installation of grating fastenings
The installation of grating fastenings is generally relatively simple. The exact procedure depends on the type of fastening. With clamps, these are hooked into the mesh of the grating and fixed with a screw or bolt. With direct screw connections, the screws or the set bolt fastenings are placed directly into the support.
Conclusion
Gratings should always be securely and stably attached. The choice of the right fastening depends on various factors. When installing grating fastenings, the exact procedure must be observed.
Frequently asked questions
How are steel gratings fastened securely?
With clamps consisting of an upper and lower part, or with hook bolts that secure the grating against shifting and lifting. The choice depends on the grating type (mesh, pressed or sheet-metal profile grating) and the bearer profile.
Which grating fastening suits which grating type?
Clamps or hook bolts for mesh gratings, e.g. J-hooks for pressed gratings, C-clips for sheet-metal profile gratings. Bar spacing and bearer height are decisive.
Are the grating fastenings suitable for outdoor use?
Yes, hot-dip galvanized or Geomet-coated versions provide durable corrosion protection; stainless steel variants are available for aggressive environments.