Click here to buy Wood Screws from TotalFixings.co.uk

Wood Screws

Click here to buy Wood Screws from TotalFixings.co.uk

A wood screw can provide a strong, neat fixing to walls, wood and timber. The screw will pull together the surfaces to be joined as the thread on the shank is rotated. The fixing is very strong and can be taken apart easily. The screw length should be about three times the thickness of the timber it is fixing in place. The thicker the screw, the greater the grip.

Designed specifically for use in wood, the wood screw has now caught up to the 21st century. The old British standard style of slotted head and tapered shank woodscrews are far less popular and now tend to be used in bespoke joinery applications. The majority of screws now sold are the "Twin threaded" and "Chipboard (also known as continental) screws". 

The Twin thread wood screw has a double start thread which winds the screw in at twice the normal speed. This is fine in softer woods as twice the drive torque is required, also the extra torque required exerts far more stress onto the tooling being used especially when driving longer screws or working with hard woods.
The Chipboard screw was originally designed for particle boards. This screw is only available with cross recessed (pozi) drive it has a sharp point for easy starting, a single deep cut thread and has a wax coating on zinc and yellow plating. This design is very easy to use and works very well on harder woods and deep screwing applications. Sizes are in millimetres i.e. 4.0mm x 25mm.

Screw sizes

A wood screw is sold according to length and shank diameter. The length is determined as the distance between the top of the screw and the surface of the wood. The higher the shank diameter, the thicker the screw.

Types of screw

Roundhead Screw
Used mostly for fixing items without countersink holes. The top is rounded and sits out from the surface.

Crosshead Screw
A popular type of screw with DIY customers because the cross-shaped design prevents the screwdriver slipping whilst in the process of working with various materials.

Countersunk Slotted Screw
Traditional screw with a long shank diameter. It is widely used in DIY projects and most suitable for work with furniture and restoration work.

Twin thread
The twin thread screws have two deep threads interwoven with each other. The shank of the screw is narrower, which gives the screw greater grip.

Dry wall screw
This is thinner than a normal screw, with a sharper point. The thin head enables it to be driven into the surface of board or studwork easily. It is commonly used on stud walls for fixing the plasterboard, and sometimes the timberwork itself.

Coach screw
Coach screws have a large hexagonal or square head and are used for a variety of DIY projects. A pilot hole should be drilled, and the screw fastened with an appropriate sized spanner or socket.

Mirror screw
This is mostly used for fixing mirrors. Mirror screws have a countersunk slotted screw, which is fixed first. A dome shaped chrome cover is then fastened into the top of the screw.

Chipboard screw
This is similar to the traditional countersunk type, but has a deeper thread which allows it to grip better in chipboard and the like.

Self tapping Screw
Self Tapping screws are used in harder materials such as metal and fiberglass. A hole, the gauge of the shank, is drilled first. The screw then cuts a thread into the material as it is tightened.

Clutch Head Screw
Clutch Head screws have a unique crosshead pattern which enables the screw to be done up, but not undone. It is used for fitting locks and other security devices.

Countersunk wood screw.
Countersunk screws fit flush, into the surface for a smooth surface finish. Available in slotted and cross recessed drive head styles.  Brass is an alloy of copper with good corrosion resistance. Once common for marine use, it has been replaced by stainless steel. Used mostly in decorative applications.  Steel is zinc plated for protection against rust.  Stainless steel A2 is an alloy of steel with high corrosion resistance. Stainless has become the material of choice for exterior and most marine applications.

Slotted Cheese head.
A barrel shaped head wood screw, with slot drive. The underside of the head is flat and sits on the surface of the material being fastened.

Raised countersunk wood screw.
Raised head countersunk screws are similar to standard a countersunk screw but have a raised rounded top for a more finished look. Available in slotted and cross recessed drive head styles.

Slotted round head wood screw.
A round head screws head has a flat underside and sits on the surface of the material to be fastened.

Floorboard Screw
Floor-Tite® is based around the revolutionary MDF-Tite® but designed to meet the specific demands of todays high density fibre floorboards. Increasing the diameter from 3.9mm to 4.2mm matches the heavier boards used in the flooring industry. The product is again CPT hardened but more emphasis on ductility, specifically important where movement occurs, such as in floor boards. Again, like Deck-Tite®, the Tr-Lock threadform does not allow the screw to work loose over time, this means no squeaking boards.

Two sizes suit the fibre floorboards currently used today:
4.2mm x 45mm
4.2mm x 55mm

Tongue Screw
Tongue-Tite® Tongue and groove screw.  
 
The ultimate Tongue and groove wood screw
Star Recess (ST10);  Greater grip and control on application.
Part Thread;  Reduces ‘Jacking’ where a full threaded screw tends to pull apart the jointed material.
Finish;  Available ex-stock in Net-Coat™ yellow plated, other coatings available to order.
TS Thread;  Utilises benefits of both twin and single thread on the same screw.
Single Coarse Thread Designed to eliminate the ream out of the floor boarding, giving high pull out retention.
Twin Thread;  Breaks even the hardest floor boarding surface and delivers a balanced point of pick up.
Narrow countersunk head gives a neat flush fix to allow the next board to sit in place.
Solid Collar;  Gives strength to the most vulnerable point of the screw.
Hardened;  Specifically developed so the screw will not break as the flooring flexes under use.
Tri-Lock™ TS Threadform;  Three flats on thread means less surface contact between screw and floorboard when driven in - which means less battery wear, easier to insert and the screw will not work loose as the boards are walked upon.
Sizes;  Just one size (3.5 x 45mm) to suit the popular floorboards currently used in today’s market. Boxed in 200’s.
Installation;  We recommend that you insert the Tongue-Tite screw at an angle of 30 - 45 degrees to the exposed face on the tongue side, and start where the tongue & face intersect (see below). 

This will drive the screw through the board and out into the substrate. Make sure the head of the screw sit beneath the tongue so it does not interfere with the next piece.
For a secure fix we advise that you insert a screw every 300mm. (Please note: If inserting a screw 50mm from the end of the board we recommend that you pre-drill to stop any splitting.)

Deck Screw 

This wood screw not only offers the perfect balance between ease of insertion and pull-out retention, while increasing the core sheer strength, but means in simple terms that the need for two gauges is negated. Deck-Tite® performs with the strength of a 10 gauge screw but with the versatility of an 8 gauge screw. So, unlike our competitors, we do not have to run with 8 sizes when 4 will do.

Added to this the Spiral Point, which enables the screw to start immediately into any material. This is proved, tested and successful.

The case hardening of this screw meansno pilot hole is necessary. The screw has a partial thread which enables two pieces of material to be joined without face to face lift (Jacking). 

An industry standard Cross Recess means no searching for driver bits

The NET-COAT finish makes it ideal for any Out Door application and, unlike screw brands, it does not suffer from recess fill – meaning the driver bit need never jump out in application.

The deck screw and outdoor wood screw that carries the TDA DeckmarkTM accreditation
Cross Recess (PZ2)
Industry standard - No searching for a driver bit.
Collar
The collar gives this decking screw strength to the most vulnerable point of the screw, whilst also allowing a deeper recess and less cam-out for a secure drive.
Part Thread
Eliminates ‘jacking’ where a full threaded screw tends to pull apart the jointed material.
Tri-Lock™ Threadform
Three flats on the thread means that as the deck screw is driven in there is less surface contact between the screw and timber, allowing less battery wear, easier insertion and the screw will not work loose as the boards are walked upon.
Single Thread
Drives in the wood without reaming, enabling a swift, efficient fix with high pull out retention.
Net-Coat™ Green for OutDoor use
A special deck screw developed for the new pressure treated timber and outdoor use.
CPT™ Hardened
Permeated case with through hardening allows the perfect balance between core ductility and surface toughness - with the strength of a high tensile bolt the screw will not snap - no pilot hole required.

Spiral Point
Immediate start.
Installation
• Use a quality PZ2 drive bit & install the screw perpendicular to the deck.
• By increasing drill speed as the screw threads into the deck will reduce wood split.
• No pilot hole required in most applications.
• Drive the screw flush, do not overdrive.
• If cam-out occurs, remove and replace. (To eliminate cam-out use an impact driver).
• Use two screws at every joist.

Deck-Tite®’s unique ‘thread pitch to Core Size Ratio’ gives the perfect balance between ease of insertion and pull-out retention whilst increasing the core sheer strength. It’s Tri-Lock™ thread forms, not cuts, a thread in the material expanding the wood which then relaxes back around the screw ensuring a tight and locked fix. Once driven in the screw will not move, it is secure for good - no stubbed toes!

Core Size Ratio means thatonly a 4.5mm gauge deck screw is necessary. Deck-Tite’s threadform enables it to perform to the strength of a 4.8mm (10g) screw but posses the versatility of a slimmer screw.

Decking Screw For Extreme Marine Environments
Deck-Tite® Plus, the ultimate in Outdoor wood screw. Whether its extreme marine environments or the new pressure treated timbers - including ACQ, Deck-Tite® is the only screw to use and the only screw guaranteed for ACQ in the

Deck-Tite® Plus, the ultimate in Outdoor wood screw. Whether its extreme marine environments or the new pressure treated timbers - including ACQ, Deck-Tite® is the only screw to use and the only screw guaranteed for ACQ in the. Manufactured from Grade 316 Austenitic stainless steel and treated with Net-Coat Clear for ultimate resistance against galvanic and chloride stress corrosion.

Deck-Tite Plus is an Austenitic grade 316 stainless steel Deck-Tite screw treated with Net-Coat Clear coating. This screw is guaranteed corrosive resistant for all applications, including:

Marine; Polluted environments and all pressure treated timber, including: Copper Azole; Copper Quaternary and Chromated Copper Arsentate. 

The screw exhibits all the features Deck-Tite which means that in all soft woods and some hard woods a pilot hole is not necessary; and utilising the Tri-Lock thread form, once driven in the screw will not work lose over time as the deck is walked upon.

The screw has a square drive recess that allows high insertion torque without reaming out the recess.

Deck-Tite comes in 4 sizes that match the needs of most deck installations. The screws are all 4.5mm in diameter which means that they are suitable for all deck boards. 2 inch (50mm); 2.1/4 inch (57mm); 2.1/2 inch (63mm) 3 inch (75mm).

The general rule is that the screw is fixed 2/3s into the substrate (deck joist) and 1/3 into the deck board. Because the screw has a partial thread, the screw works as a clamp, this also allows a certain amount of lateral movement, essential in a deck screw. Choose the screw length that matches the deck board installation.
Deck-Tite plus is the only deck screw that answers all deck installation concerns.

Composite Decking Screw 
Deck-Tite Composite deck screw, composite timber is now being used as an alternative to natural timber in outdoor use such as decks, playground equipment, marine environments, agricultural and many more.
This composite timber exhibits problems for the normal wood screw, the Deck-Tite® Composite deck screw addresses these problems resulting in an efficient and neat fix. Coated in Net-Coat Brown for Out Door use Deck-Tite® Composite is the only screw to use with Composite timber.

Composite material now being used as a replacement for wooden decking is now becoming more common. The material comes in several variants from all plastic to a variant of plastic and wood.

Deck-Tite® Composite decking screw is designed to work with all variants of composite Timber. The material poses several problems to a standard deck screw, the most notable is that swarf builds up outside the hole where the screw is driven and cause the screw to sit proud. Deck-Tite® composite deck screw has a unique thread form that drives the swarf back into the hole, the screw head then sits flush with the composite surface.

Another problem with composite materail is that normal screws are difficult to drive into composite material. Here, Deck-Tite® Composite uses the Tri-Lock TS® threadform to overcome these difficulties, resulting in a screw that drives in perfectly in all composite Timber.

On application, the rules are the same as for Deck-Tite® with 2/3 of the screw fixing into the substrate (joist) and 1/3 of the screw in the deck board.

Deck-Tite® Composite is treated with Net-Coat® brown that is corrosive resistant in most outdoor applications.

Screw-tite Wood Screw and General Purpose Screw
Countersink Ribs
Cutting edge ribs ream and self - countersink the wood screw.
Collar
Gives strength to the most vulnerable point of the wood screw.
CPT™ Hardened
Permeated case with through hardening allows the perfect balance between core ductility and
surface toughness - with the strength of a high tensile bolt the screw will not snap.
Masonry Screw
Can be screwed directly into masonry, no plastic plug required, just a pilot hole 1mm less than the screw. (i.e. 6mm Screw-Tite® = 5mm hole)
Tri - Lock™ Threadform
Three flats on thread means less surface contact between wood screw and material when driven in, this means less battery wear,
easier to insert and the screw will not work loose over time as the material flexes under use.
Cross Recess
Industry standard - no searching for a driver bit. Swift and easy bit location.
Part Thread
Eliminates ‘jacking’ where a full threaded screw tends to pull apart the jointed material.
TS Thread (Exaggerated)
Utilises benefits of both twin and single thread on the same wood screw.
Single Coarse Thread
Drives in without reaming a hole in the material, enabling a swift efficient fix with high pullout retention.
Twin Thread
Penetrates the dense surface and balances the screw with two points of pickup that start right at the tip of the screw.
Finish
Available ex-stock in Net-Coat™ yellow plated, other coatings available to order.

This allpurpose wood screw for Indoor and out door use. ‘Screw-Tite®’ extensively developed with the discerning craftsman/woman in mind, utilises the ‘Tri-Lock TS’ threadform which uniquely and cleverly incorporates the benefits of a single thread and a twin thread on the same screw, thus making it the most technically advanced screw available but more importantly the best performing woodscrew there is – a bold statement, we know, but we listened to what the user wanted and gave them just that. 

Supplied in 30 sizes, from 12mm to 100mm.

The Spiral Point beaks through even the hardest dense surface. A twin thread engages the material and balances the point of pick-up, a thread is dropped, a single thread engages enabling high pull-out retention and less blistering on end grain. The Tri-Lock shank reduces insertion torque (25% over a standard woodscrew)Part-thread shank reduces jacking (parting between jointed material)Under-head ribs displaces material – self countersinks. Once driven in the Tri-Lock shank remains tight, will not unseat as the material flexes under use. Cross-Drive recess, secure and safe. Hardened, hence no pilot hole necessary.

Outside Use Wood Screw, HEAVY DUTY
Timber-Tite universal heavy duty EXTERIOR timber fixing (sometimes referred to as a Landscape screw). Can replace cup square bolts for an easy, quick, secure and neater fix.

Star recess - Secure drive, essential for high torque driving
Countersunk Head - Neat and flush fix, allowing boards to be placed over posts.
Under head ribs - Self countersinking.
Ultra Part Thread - parting between posts & Joist during fixing (jacking).
Net-Coat-Green -  Weather resistant finish suitable for outdoor applications
Resistant to burn-off while being driven in. Doesn’t crack under load in application.
Single Tri-Lock Thread -  reduces wood split, This wood screw means no pilot hole necessary in most applications.
Coarse Thread -  High pull out retention.
Timber-Tite® comes in 4 sizes designed to meet most applications.
M6.5x80; M6.5x145; M6.5x200 M6.5x250.

The only heavy duty timber (landscape) screw that will sit flush when fixed, allowing a facia board to be fixed over it - essential in decking.
This wood screw is now available in 200mm and 250mm the screws are made from high tensile steel while exhibiting ductility so will not break in use.

Common usages:
6.5x80mm used to fix deck joists.
6.5x145mm used to fix Newel Posts.
6.5x200mm used in heavier deck installations and truss work.
6.5x250mm often used to fix railway sleepers but can be used on any other heavy duty application.

MDF Board Screw
MDF-Tite® This screw is specifically designed to match the needs demanded for fixing MDF, manufactured in four sizes that match the boards currently on the market. The following sizes have been developed to meet the boards in use in the market place: 3.9x25, 3.9x30, 3.9x40, 3.9x45.

Based on the revolutionary Tri-Lock TS threadform which uniquely incorporates the benefits of a single thread and a twin thread on the same MDF screw, MDF-Tite® is the perfect solution to all MDF applications.

CPT hardened to allow high torque insertion while maintaining ductility, under head ribs for self countersinking and as with all the Tite range of MDF screws, once driven in the Tri-Lock threadform ensures the screw will not work out over time.

Click here to buy Wood Screws from TotalFixings.co.uk