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Frequently asked questions and answers

The world of hardware and screws is full of technical terms. We explain many terms and synonyms here. In addition, we answer other frequently asked questions about delivery to products. Do you also have a question or tip for Wovar? Send us an email at info@wovar.nl.

Would you like to order Wovar screws, bolts or hardware? We strive to deliver your order in no more than 2-5 business days throughout the entirety of Europe.

Snelle antwoorden

After you have placed an order, you will first receive a confirmation that your order has been processed by us. As soon as the order is shipped you will receive an email that the status has been changed to order shipped. When applicable, this email will contain the track and trace code of your order.

Yes. We provide our own brand and quality from our own stock.

Only companies in the construction, home and garden industries are eligible for a coupon code to redeem a business discount. This is only for companies with a Wovar account that order several times a year. With a business account you get more benefits such as a permanent contact person and you can make use of urgent delivery.

With a business account you will receive a personal discount code. You can enter this so-called coupon code as soon as you place products in your shopping cart. Business customers get an extra 15% discount on every order.

We do not currently support postpay payment methods, but we are looking to make this a possibility in the near future.

No, you can only order the Wovar brand in our webshop. You will also find Wovar at a growing number of timber merchants and gardeners. Please contact our wholesale service for retail and B2B inquiries.

We only supply premium quality, primarily from Germany and renowned factories in Taiwan and China.

Yes, we also deliver screws and hardware anywhere in Germany. In that case, you should order via the website https://www.wovar.de.

Use a special wood drill bit, hardwood drill bit or metal twist drill for drilling in wood. For hardwood in particular, never drill in one go, but empty the drill every approximately 2 cm by removing it from the drill hole and removing the wood fibres. Is your drill going to smoke? Then you drill too far in 1 turn. You run the risk of the drill breaking. If necessary, use olive oil so that wood fibers slide off your wood drill more easily.

Push only lightly on your drill, otherwise you risk breaking your drill, especially with thin 2 to 4 mm drill bits. Have a strong hand so that you drill straight and do not swing out too much when drilling. Also make sure you have a good drill, preferably 12 volts or with plug. Put it on the drill position.

Use our special auger bit for this, these are no less than 46 cm long. As with all our hardwood drills, it is important that the drill does not get too hot. Drill about 2 cm into the wood and raise the drill again so that the sawdust can be removed. Always let the drill do the work. Wovar auger bits have a special drill point. This pulls the drill itself through the wood, as it were.

We recommend always pre-drilling wood construction screws. This greatly simplifies screwing in and ensures that the head of the screw is not damaged. You will also see that the screw is then nicely turned straight into the wood. Wood construction screws 8 mm thick must be pre-drilled with a 6.0 mm hardwood drill or for longer wood construction screws a 6.0 mm hose drill. If you use a drill thickness 6 mm, the screw still has enough meat to anchor itself firmly in the wood.

We only have pergola connectors for 7x7, 9x9 2n 12z12 cm posts. You can also place 68x68, 8x8, 10x10 and 88x88 mm thick posts here. Use our L-shaped corner brackets for other post thicknesses. For each pergola corner bracket, we indicate which square wooden beams/posts you can use. View all pergola corner brackets here.

The number of mm thread of our carriage bolts is shown on the product photo. The number of mm of thread of our galvanized carriage bolts is different. Stainless steel carriage bolts always have full threads.

Use the rule of thumb: Carriage bolt thickness + 1 mm = drill thickness. For example, if you have a carriage bolt of m10 thick, use an 11 mm drill for pre-drilling. In addition to standard wood drills, you can also choose our auger bits. These latter drills are useful if you want to drill deeper than 4 cm. Using a rubber mallet, drive the carriage bolt through your drill hole.

This way, your carriage bolt remains stuck and can no longer rotate. You tap the semi-circular head with a rubber mallet. As a result, the square part clamps into the wood and the bolt does not turn while tightening the nut.

A carriage bolt is a threaded bolt with a semicircular head with a square section underneath. Nuts and washers are supplied as standard with Wovar carriage bolts. It is not possible to use carriage bolts without nuts. The square section under the semicircular head ensures that the bolt does not rotate when the nut is tightened. Carriage bolts are suitable for metal and wood. When joining metal, the square part must fit exactly into a square hole. With wood connection, hammer the semi-circular head into the wood with a rubber hammer.

Wovar supplies carriage bolts in galvanized steel, stainless steel and in black. All carriage bolts are supplied complete with nut and washer at Wovar! The thicknesses vary from M6 to M12. The lengths are available from 30 mm to 300 mm.

Yes, all Wovar carriage bolts are delivered including hex nut and washer! If you prefer to use lock nuts or mudwing repair washers, you must order them separately.

Self-tapping bolts have full threads and a hex head. Carriage bolts have threads only on the end and usually a round head.

Generally speaking, you do not need to pre-drill self-drilling screws. Sometimes it is useful to drill a very small hole in your metal with a 2mm drill so that your self-tapping screw is mounted exactly in the desired location. Self-tapping screws with a torx head are easier to process than with a cross head. In addition to these self-tapping screws, Wovar also supplies self-tapping screws with a hexagonal head drive. These have an EPDM ring. This makes them suitable for tile sheets or corrugated sheets.

Tile supports have 4 raised flanges at the top in the shape of a cross, so that 4 concrete tiles clamp in here. Decking supports have only 1 flange, to this you attach your wooden lower beam of your terrace.

These screws are both equally strong. The "old-fashioned" Yellow Galvanized is often used with Larch Douglas wood because of its color. More and more customers are switching to grey galvanized, after all, wood also ages. Yellow galvanized is slightly more protected against oxidation. But this difference compared to grey galvanized is minimal.

Wovar is a fantasy name for our premium brand. The letters are not an abbreviation of anything.

A carabiner is a hook with a hinged part. Carabiners are also called carabiner or feston hook. Carabiners are available in galvanized steel and stainless steel. Carabiners are used for quick connections. They are also popular in mountaineering.

In addition to the traditional carabiners, as shown on the right, you have different versions. For example, you also have carabiners with an eye and carabiners with a screw connection for extra safety. Wovar delivers traditional carabiners in various sizes, made of galvanized steel and stainless steel, often to your home the next day.

This is a very strong type of steel with less nickel. Because there is less nickel in this type of steel, it is much harder and therefore stronger. However, stainless steel 410 can oxidize slightly.

It is always recommended to use our special decking screws stainless steel 410 screws for mounting decking. These are much harder than stainless steel A2 screws. This allows them to absorb the pressure of the wood much better.

This is a lockable hook, which was used in the past to hang guns on. The alternative is a carabiner.

Galvanized screws can oxidize outside. In other words, they are susceptible to rusting Our stainless steel 410 garden screws are not vulnerable to oxidation, and are just as strong as galvanized screws and extra strong. Make sure you have good bits so that the heads of our screws are not damaged. Otherwise, our stainless steel 410 screws can also oxidize. Wovar also supplies a wide range of stainless steel A2 screws. These do not oxidize but are less strong than our stainless steel 410 or galvanized screws. This is because stainless steel A2 is a softer type of steel. Preferably always use our RVS410 screws.

Pre-drilling is always recommended with our wood construction screws. This ensures that the screws are processed more easily and are turned nicely straight into the wood. You pre-drill our 8 mm thick wood construction screws with a 6 mm thick hardwood drill. For wood construction screws with a length of 140 mm or longer, use our 6 mm hose drill. By choosing a drill bit that is 2 mm thinner than the screw. Does the thread still have enough meat in the wood to ensure a firm connection.

Choosing the right screws for a patio is very important. Namely, such screws should absorb the action of wood in wind and weather. Cheap stainless steel screws are not suitable for this. We also recommend choosing a minimum thickness of 5 mm. It is not without reason that we have made a name for ourselves with our Wovar Decking screws 5x50 mm stainless steel 410 with torx head, milling ribs and cutting point. These high-quality stainless steel decking screws are suitable for 19, 20, 21, 25 and 28 mm thick decking boards.

Yes, we supply screws in black, white, yellow and grey. Often used of facade panels and black fence boards and black walls of roofs. Always use 2 screws per plank/beam intersection with gunwale planks and never stack the parts tightly together.

Full-thread screws are widely used for metal to wood connections. Because the screw is fully threaded, it has a strong anchorage in the wood. This makes the metal extra firmly attached. For wood to wood connections, it is better to choose partial thread screws. If you screw wood to wood with full-thread screws, there will be space between the wooden parts and they will not be pulled tight against each other. This does happen with partial thread screws.

A wood construction screw is the successor to the traditional wood screw. Coach screws are actually wood construction screws that are commonly used when building a canopy. For example, you can easily screw together slant beams, or 2 thick 15 x 15 cm beams.

A wood construction screw has a wide wood construction of approximately 20 mm wide. This ensures a large bearing surface and a high clamping range. This makes the screw suitable for heavy building constructions. A Torx 40 drive is incorporated in the wood construction. This ensures that you can process the screws super fast compared to threaded bolts with a hexagon head.

A disc head screw is also called a coach screw or wood construction screw. This screw is the successor to the threaded bolt. The difference is that the disc head screws have a torx 40 drive, while the bolts have a hexagon head drive. Screws with a torx head are faster to process in wood. The head of Wovar dish head screws is approximately 20 mm wide and is widely used for heavy building structures such as canopies.

The name says it all, this is a screw specially developed for attaching decking boards. Our stainless steel 410 decking screws are specially hardened and do not oxidize. Normal stainless steel A2 screws are less strong and cannot handle the action of decking boards. This is no problem with the stainless steel 410 decking screws.

In addition to the steel strength, decking screws also have a nice countersunk head with milling ribs underneath. This completely disappears in your decking, which ensures a beautiful finish. The extra deep torx 25 impression ensures that the screws are not damaged during screwing in. Due to the handy cutting point / drill point, pre-drilling is not always necessary and the wood does not split. The shank ribs above the screw thread ensure less screw-in resistance. This allows you to screw more decking screws per battery charge.

Extra benefits with Wovar decking screws!

At Wovar you will receive a free, perfectly fitting torx bit with every box of decking screws. In addition, you will receive free spacers with every order of decking screws. These help you maintain the correct spaces between the decking boards. You will receive 2 yellow and 1 red spacer. If you are mounting hardwood decking, choose 1 yellow and 1 red spacer. For softwood decking, use the 2 yellow spacers.

Hardened screws are made more resilient in a special machine.

A corrugated sheet screw is, as the name suggests, a screw to fix corrugated sheets. The corrugated sheet screws from Wovar are made of stainless steel A2 steel and have an EPDM ring. This prevents the corrugated sheets from rusting and ensures a watertight installation. The corrugated iron screws can only be used for screwing corrugated sheets to wooden substructures

Corrugated iron screws are very popular and available in sizes 4.5 x 50 mm up to and including 4.5 x 100 mm. Wovar also supplies bolts for corrugated iron sheets. These are thicker and more suitable for heavier corrugated sheets with a steep roof construction.

FreesribbenThose are the ridges under the head of the screw. This ensures that the head sinks nicely into wood. This gives you a beautiful finish. The image opposite shows exactly what Wovar  means by milling ribs.

A cutting point or tip of our Wovar screws is a kind of saw cut that interrupts the screw thread. This is also known as a drill point. The advantage of a cutting point is that it makes pre-drilling in soft woods unnecessary. Sometimes it is not even necessary to pre-drill into hardwood thanks to the cutting tip. A cutting point also ensures that thin sheet material does not split. The image below shows what an cutting point looks like.

A torx head is a hexagonal drive for screws. Torx drive provides extra grip so that your machine does not slip and has an optimal power transmission while turning in your screw. With torx drives there is a chance that your screw will be damaged during screwing in. Wovar supplies torx screws with a bit but of TX10, TX20, TX25, TX30 and TX 40.

Professionals such as construction workers and carpenters often use screws with torx drives. Wovar supplies free torx bits with every box of galvanized chipboard screws, galvanized garden screws and decking screws stainless steel 410.

The image below shows a torx bit.

Pozidrive is a crosshead drive where the standard crosshead is provided with a second cross. This creates a kind of star-shaped incision. The second cross generates a better power transmission than with a normal cross-head drive. Our chipboard screws with pozidrive drive are ideal for home use.

Below is an image of a pozidrive head with the corresponding bit.

Wat is pozidrive

That is a screw that is partly threaded. Part-thread screws are very suitable for wood to wood constructions. Because the screw is partly provided with screw thread, it pulls the wooden elements tightly against each other. When using a full-thread screw for wood on wood constructions, there will be space between the wood.

Wovar supplies very strong partial thread screws galvanized torx.

A drill screw is quite simply a self-tapping screw. A drill screw has a drill head that can be screwed into metal such as aluminum or galvanized steel without pre-drilling. A drill screw is also called a self-tapping screw. Available at Wovar in galvanized and stainless steel in various lengths.

Hinges without resistance are completely straight. Hinges with resistance have a small kink. This way your door will be flush with the post to which you have attached your hinge hook. With curved hinges you can mount the hinges on the back on a hook and have the hinges in view at the front of your door or gate.

Hinges with resistance go about 2 centimeters inwards. This ensures that your door fits exactly in the door frame. With straight hinges, your door protrudes slightly in front of the door frame.

So that you can firmly anchor the hinge with a carriage bolt. Carriage bolts have a square shape behind the head. This falls exactly in the square hole, so that the hinge does not move from its place. It also has an anti-burglary function. By mounting carriage bolts in 2 different ways, it is impossible to unscrew them from 1 hole.

The resistance of hinges with resistance is 19 mm. The resistance therefore ensures that your door falls back 19 mm. If you choose a normal hinge hook, the back of the hinge will be flush with the back of the hinge hook. For example, if you place the hinge hook on a table, and slide a hinge over the hook with resistance, the hinge will lie flat on the table just like the hine hook.

wat is een duimheng

A strap hinge is a long hinge with which you mount fence doors, garden doors, garden gates on garden fences. Wovar supplies hinges in galvanized steel and in black. Strap hinges have a high carrying capacity. This makes them very suitable for heavy doors. A strap hinge should always be combined with a hinge hook You screw the plate thumb to the post, and the handle slides over the thumb of the hinge hook as shown in the picture.

A strap hinge roughly exists in 3 variants. These are straight hinges, resistance hinges (small bend) and bent hinges. Which one you choose depends on the desired door position.

Wovar supplies coach screws in different thicknesses. To choose the correct drill size to pre-drill the studs, take the thickness of the studs and subtract 2 mm from it. You now have the correct drill bit size to pre-drill the coach screw.

Take an M8 coach screw as an example. This one is 8mm thick. From this you detract 2 mm, so 6.0. So you should choose a wood drill bit with a 6.0 mm thickness.

A coach screw is a strong coach screw with a hexagon head drive. Coach screws are available in stainless steel and galvanized steel. Because thicker coach screws are very strong, they are often used for heavy wooden constructions. Due to the hexagon head, you must process the coach screws with a ring, open-ended or socket wrench. The hexagonal head makes it possible to tighten the bolts extra firmly. It is recommended to pre-drill wood studs.

A coach screw has a point through which it is screwed directly into the wood.

Beam supports are narrow and suitable for hanging installation on horizontal wooden girders. Beam supports are available with flange and without flange. Beam supports with flange are bricked in when building a stone wall. Beam supports without flange are used with already standing walls. The advantage of beam supports is that they are narrow and it is therefore possible to place a beam tightly along a wall. Joist hangers have no flange and are wide. This makes it impossible to place a beam along a wall. Joist hangers are mounted against a horizontal beam. Here, you can insert a beam perpendicularly. A beam carrier without flange is in fact a narrow joist hanger Joist hangers are stronger than beam supports. They have been tested and provided with a CE mark. For each joist hanger, the carrying capacity is indicated.

Our stainless steel screws for Oak & Garapa wood have been specially developed for wood types containing tannic acid. This also includes red cedar. These screws have a special protective coating so that tannic acids do not affect the screw. You also do not have to worry that the coating will be damaged during the screwing in of the screws. The coating is self-healing and can easily repair minor damage.

A screw nail is a wire nail with a twisted pin. Wovar supplies round head screw nails in stainless steel A2, which are widely used for mounting facade cladding. The twisted pin easily absorbs the effect of hardwood and softwood. This keeps the nail firmly in the wood and prevents your facade cladding from bulging. If you were to use straight nails, there is a good chance that they will be pulled out of the wood, as it were.

A frame fixing is also called a hammer fixing. Frame fixings are used to mount beams to a wall or secure wooden frames. The advantage of the frame fixings is that they have a Torx 40 drive. This makes it possible to remove the frame fixings again after they have been hammered into the wall. Wovar frame fixings have an extra thick core. This gives the frame fixings even more bearing capacity!

Which size should I choose?

All Wovar frame fixings are 10 mm thick. The lengths vary from 100 to 180 mm. You choose the right length by multiplying the thickness of your beam by 2. So you mount a beam of 50 mm thick with frame fixings 10 x 100 mm.

How do I mount a beam to the wall using the Wovar frame fixings?

First you determine at which points of the beam you want to attach frame fixings. Spread the fixings evenly over the beam with a distance of approximately 50 cm. Drill all the way through the beam with an 11mm hardwood drill bit. Then hold the bar in the desired position. Dot the wall with our 12 mm thick SDS-plus hammer drill to pre-drill the frame fixings in the right place. For sturdiness it is important that the frame fixing is nicely anchored in the solid stone.

With a 50 mm thick beam, a frame fixing 10x100 mm is inserted into the wall for 50 mm. Add 10 mm to this. In total, you drill a hole with a drilling depth of 60 mm.

An frame fixing is a set consisting of a fixing with a screw. You can hammer this screw into the fixing with a hammer, today the name hammer fixing. At Wovar you will find the hammer fixings under frame fixings.