Rothoblaas screws are built for modern building needs, bringing strong hold, precise performance, and a huge choice for timber, metal, and concrete. If you design, build, or maintain structures, the right screw saves time, boosts safety, and helps projects last. This guide explains the main types of Rothoblaas screws, where to use them, and how to choose the best option for your job.
What makes Rothoblaas screws different
- A wide range for many materials: timber, plates, concrete, and metal
- High performance in load, pull-out, and shear
- Options for harsh weather and coastal zones
- Clean design for visible façades and decks
- Global approvals for compliance
The range covers classic countersunk screws, full-thread connectors, coach screws, plate screws, drywall screws, self-drilling metal screws, and anchors for concrete, plus spacers, washers, and specialist items for insulation and façades. You can browse much of it in our screws for timber collection.
Key use cases
- Timber structures: CLT, glulam, LVL, and softwood or hardwood frames
- Metal connections: timber-to-metal and sheet-metal fixings
- Concrete: screw anchors for cracked and non-cracked concrete
- Decks and façades: clean, strong, weather-ready finishes
- Plates and brackets: reliable plate screws for structural hardware
- Insulation: screws and washers for timber and masonry
Materials and coatings: pick the right protection
- Electrogalvanised carbon steel: for dry, indoor use
- Coated carbon steel: for standard outdoor use
- Stainless steel (A2, A4, HCR, AISI 304, AISI 316, AISI 410): for high corrosion resistance, coastal zones, and chemically aggressive sites
Match the steel to service class, atmospheric corrosivity, and wood corrosivity to lengthen the life of your fixings.
Thread options: how thread choice affects performance
- Partial thread: pulls two members tight; ideal for timber-to-timber where clamping is needed
- Full thread: higher pull-out and slip resistance; ideal for reinforcement and long embedment
- Double thread: useful for insulation, spacers, or controlled stand-off
Heads and drive types: finish and function
- Countersunk: flush finish in timber (e.g. HBS, SCI)
- Flange head: higher head bearing for plates, brackets, and softwoods (e.g. TBS series)
- Cylindrical, pan, or round head: for plates, visible fixings, and metalwork (e.g. VGZ, HBS Plate, LBS)
- Concealed head for façades: neat, low-visibility fixings (e.g. KKT, KKT COLOR)
Approvals and compliance
Rothoblaas lists approvals across major markets: CE (European Conformity), UKCA (UK Conformity Assessed), ICC-ES (USA), and Canada and Japan code approvals. European approvals rest on the product's ETA (European Technical Assessment), which provides the characteristic load data used in design. Always check the specific product's technical details for load data, fire notes, and installation guidance.
Engineering note: Pull-out, shear, and spacing values from the ETA feed directly into Eurocode 5 connection design and vary by diameter, length, timber density, and load angle. Confirm the data for the exact product rather than substituting a similar screw.
Timber screws: the backbone of the range
- Countersunk screws (HBS family): a go-to for timber assemblies; choose HBS SOFTWOOD for softwoods and HBS HARDWOOD for denser species
- Fully threaded connectors (VGS, VGZ families): ideal for reinforcement, long embedment, and high-performance joints
- Small-head screws (SHS): discreet face fixings where head size matters
- Washers and accessories (HUS, XYLOFON): improve bearing and separate timber layers where needed
For hardwoods, pick the hardwood variant (e.g. HBS HARDWOOD, VGZ HARDWOOD, LBS HARDWOOD) to reduce splitting and improve driving performance.
Screws for plates and brackets
- HBS PLATE / LBS series: pan or round heads designed to seat well on steel plates and timber connectors
- EVO variants: updated drive, coating, or geometry for even better performance
- Frame and maxi options (e.g. TBS FRAME, TBS MAX): larger heads and bearing areas for frames and light-gauge steel plates
When fixing plates, follow the connector's layout and edge distances, use the specified diameter and length, and consider flange or round heads for better bearing and reduced plate deformation. See the plates and angle brackets range for the matching hardware.
Self-drilling screws for metal
- Timber-to-metal (SBS, SPP): drill and fasten in one step, reducing labour and bit changes
- Metal-to-metal (SBN, SAR): sheet-to-sheet or sheet-to-structure with hex heads and sealing options
- Sheet metal screws and washers (MTS, MCS, WBAZ): a neat, weather-sealed finish on roofing and cladding
Choose A2 or A4 stainless where corrosion or water exposure is high, and use caps or gasketed washers for weather sealing.
Concrete screw anchors
- SKR, SKS, SKP, and EVO variants: screw anchors for concrete applications
- Choose by load class, cracked or non-cracked concrete, edge distances, and embedment depth
- Useful for base plates, angles, and temporary or removable fixings
Always verify the product's ETA or ICC data for concrete condition, spacing, and fire performance. Browse the chemical and metal anchors range for options.
Decks and façades: a finish that lasts
- Façade screws (FAS A4 / AISI 316, KKT / KKT COLOR): attractive heads, colour options, and high corrosion resistance for coastal façades
- Decking and exterior timber: choose stainless or high-grade coated screws, with small or concealed heads for a clean look
- Insulation fastening: DGZ (double-thread), THERMOWASHER, ISULFIX for timber or brickwork substrates
In coastal or pool areas, prefer A4/316 stainless or HCR for long-term durability. See the screws and connectors for decks range for exterior options.
Special screws and systems for tricky details
- Spacers (DRS timber-to-timber, DRT wood-to-brickwork): create reliable standoffs without compression creep
- Insulation and stand-off (DGZ, THERMOWASHER, ISULFIX): fix insulation layers cleanly
- Reinforcement systems (RTR): strengthen timber elements against splitting or uplift
- Washers (VGU 45° washer for VGS): angle-specific bearing for inclined screws
- Drywall (DWS): purpose-built for plasterboard to timber or metal studs
Choosing the right screw: a quick path
- Define the substrate: timber (softwood, hardwood, engineered), metal (thickness/gauge), concrete (cracked/non-cracked), or masonry (brick/block)
- Set the environment: indoors (dry), outdoors (rain/splash), or coastal/industrial (high corrosion)
- Select the function: structural connection, plate fixing, deck or façade finish, insulation stand-off, or timber reinforcement
- Pick material and protection: carbon steel (indoor), coated carbon steel (general outdoor), or A2/A4/HCR stainless (high corrosion)
- Choose head and thread: countersunk for flush timber; flange, pan, or round for plates and bearing; small or concealed for visible finishes; partial thread for clamping; full thread for high pull-out and reinforcement
- Confirm standards: check CE/UKCA/ICC and other approvals as needed, and review technical sheets for spacing, edge distances, and torque
Installation tips for best results
- Pre-drill in dense hardwoods to avoid splitting and reduce driving torque
- Use the correct bit and drive, and keep bits in good condition
- Respect the edge distances and spacing in the technical data
- Keep drive speed steady and controlled to protect the coating and avoid over-torque
- For inclined screws, use guides or the specified washer for the correct angle
- Seal exterior fixings with proper gaskets or washers where weather exposure is high
Final thoughts
Rothoblaas screws offer a deep, well-tested range for timber, metal, and concrete, with clear options in head, thread, steel grade, and approvals, so it is easy to match the screw to the job. Start by defining your substrate, environment, and function, then narrow down the material, head, and thread. As an authorised Rothoblaas UK distributor, TimbA Systems can help you specify and supply the right fastener; share your project details and we will recommend the correct screw with the load data to back it up.
