Best-in-class timber construction screws – discover Procut

9 min
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As befits a leading provider of fixings and fasteners, Rawlplug is continuously striving to improve its product range. And nothing demonstrates it better than the Procut line of timber screws. Find out what makes them so unique and why they are definitely worth your attention when it comes to timber

Timber construction screws are expected to deliver utmost strength, functionality, and durability. After all, secure joining of structural elements is absolutely crucial to entire buildings as well as to human safety. So learn more about the special features of the Procut timber construction screws.

Timber construction screws – types and applications

Unlike ordinary wood screws, which come in handy when performing assembly work, for instance, setting up furniture or building garden structures, construction screws are intended for working in structural timber, used in the construction of buildings, e.g. roof framing components. This is precisely why they are typically longer and thicker, which enables them to form durable, effective, and secure joints. 

The wide selection of screws dedicated to timber structures includes models of diverse characteristics. They can be classified according to the following characteristics:

  • screw head type: conical (countersunk), flat (wafer), cylindrical,
  • thread type – featuring full or partial, as well as double threads,
  • material – they can be made of stainless or zinc-plated steel, or feature other anti-corrosion coatings.

Did you know that...?

Construction screws are sometimes interchangeably referred to as carpentry (or joinery) screws.

The choice of screws depends on the type of wood and structure you are about to work with.

Find out how to choose the right timber screws further on in this article.

Applications for construction screws

Timber construction screws are used most typically in jobs such as the following:

  1. Construction of timber frame houses – timber screws are crucial when it comes to joining the structural components of timber frame houses.
  2. Installation of roof trusses – they are commonly used to join roof truss framework members.
  3. Installation of beams and columns in timber structures – timber screws are used to fix floor beams, ceiling beams, and columns.
  4. Refurbishment and renovation work – timber construction screws are used in renovation and structural reinforcement works in existing buildings, where additional stability and mechanical strength are required.
  5. Interior load bearing structures – they are also used to reinforce load bearing structures inside buildings, for example, when building partition walls or stairs. 
  6. Terrace and deck construction – these screws prove perfect for fixing decking boards to the supporting structure.
  7. Fencing construction – e.g. for fixing panels and boards to wooden posts.
  8. Construction of garden furniture and building exterior development – on account of their strength and resistance to external conditions, they are used in the construction of garden furniture, gazebos, tool houses, and other outdoor structures.
budowa domu szkieletowego
Construction of a timber frame house.

How to choose the best screws for structural timber applications?

In order to make sure that a timber structure is durable enough and as safe as possible, you need to accommodate the given conditions.

Before choosing a specific fastener type, pay special attention to the factors described below.

  1. Wood type:
    • Solid or glulam – there is a wide range of glued-laminated timber products available on the contemporary market in addition to traditional solid timber, which is why you should carefully consider if a given product is suitable for the material of your choice;
    • fresh or dried – working with dry wood, which is more prone to cracking, you may need to pre-drill holes.
  2. Structural considerations:
    • load – the higher it is, the larger the screw length and diameter should be,
    • joint type – if there are shearing forces at play, you may consider using screws with a full thread of adequate design.
  3. Environmental conditions – corrosion risk proves particularly important in this respect. Wherever joinery screws may be exposed to negative external factors, use those protected by adequate coatings.
  4. Screw head types:
    • countersunk head penetrates the wooden substrate, allowing the screw to come flush,
    • wafer head screws adhere closely to the wood surface, providing a higher clamping force, 
    • cylindrical socket head makes it possible to set the fastener as deeply in the base material as needed and create adequate setups of full-thread screws.
  5. Screw drive type – this feature will have a direct effect on how comfortable it is to handle a given product and proceed with installation work. Below are selected types of screw drives:
    • Torx – star-shaped drive,
    • Phillips – cross-shaped drive,
    • Hex – hexagonal drive,
    • Robertson – square-shaped drive.

      Wood screws for professional applications feature the Torx drive.

  6. Length and diameter are very important for construction screws as they determine how secure a joint is.  What also matters is to mind the minimum thickness of the elements joined, the edge distance, and the fastener spacing.
  7. Screw tip and thread – the right design of the screw tip enables it to penetrate wood instantaneously. With a partial thread, the screw is capable of clamping the elements it joins more effectively, while a full thread is intended specifically for diagonal or crossed screw setups, as well as for reinforcement of structural timber components.
  8. Approvals and standards – best-in-class joinery screws intended for structural timber meet all the applicable standards and hold the right certificates.

Choosing screws for wood and timber applications, you should definitely consider brands of long-standing experience, known to deliver high-quality fasteners.

jaki wkręt do drewna konstrukcyjnego
Timber construction screws from established manufacturers feature appropriate designations, making it easier to match them to specific on-site jobs. You can also make use of the support provided by expert consultants.

Why choose Procut? Screws for the most demanding professionals

Procut stands for high-quality screws intended for professional applications. Their unique design prevents the screws from damaging wood and makes fastening up to 30% faster. The five variants of the Procut screws cover nearly 100% of the applications of the fasteners used while building wooden structures, such as:

  • timber frame structures,
  • roof framing, 
  • floor and wall structures in new and refurbished buildings,
  • support and reinforcement structures,
  • roof and facade sub-structures.

They also perform remarkably in other construction jobs:

  • bungalows and canopies,
  • stairs and balustrades, 
  • fences and gazebos,
  • playgrounds and garden furniture,
  • soffits.
Łączenie drewna konstrukcyjnego.
Construction of a wooden floor using the Procut screws.

The Procut timber screws are suitable for different kinds of timber:

  • soft (coniferous) wood of minimum strength class C14, 
  • hard (deciduous) wood of minimum strength class D18,
  • glued-laminated wood of minimum strength class GL20,
  • and wood-based materials, e.g. LVL, CLT, KVH, BSH.

The PROCUT screws can be used for fixing and fastening in all wood-based materials such as particle board, OSB, or plywood.

[video] In a nutshell. Find out why the Procut screws are definitely worth your while.

PROCUT construction screws – for joining wooden structural elements

What makes the Procut screws so unique?

  1. 1

    Patented thread ribs that cause no damage to wood structure.

  2. 2

    High-precision rolled thread seamlessly converting into the sharp tip for instantaneous driving start after the screw is set against the base material, making work easier and faster.

  3. 3

    Conical geometry of the Torx drive socket formed to match the lower range of dimensional tolerance, triggering a mechanical bonding effect.

  4. 4

    Milling point directly adjacent to the screw shank to increase the hole diameter past the thread, preparing the hole for the rolling resistance to be reduced along the shank.

  5. 5

    Torx sockets that come in a reduced number of sizes matching the diameters available in the range, making it possible to cut down on the number of required bits and tools. Star-shaped drives also prevent screws from slipping while they are being driven.

  6. 6

    Innovative screwing technique which prevents wood from cracking and protects the thread and hole from getting fouled with drillings. This reduces the diameter of the hole in the wood and improves the joint’s load capacity and strength even further.

  7. 7

    Perfect bit and socket fit, making it possible to drive our screws with one hand!

cechy wkrętów Procut
Meticulously designed Procut screw with its special ribs, milling section, pockets under the countersunk head, and sharp tip.

That’s a good one!

How come the Procut timber construction screws can reduce fastening time by up to 30% compared to regular screws? It’s because their unique design ensures:

  • instantaneous start of screwing once the fastener has been set against the base material thanks to the sharp ribs at the screw tip, splitting the wooden substrate,
  • optimal thread pitch,
  • perfect bit and socket fit.

How to pick the right Procut screw?

Our professional joinery screws are available in several variants to cover nearly 100% of on-site demand, wherever structural timber is in use.

You can choose between the Procut screws with three thread types:

  1. Partial thread with a milling section and reduced profile, decreasing the time and energy demand of fastening jobs;
  2. Full thread of optimised pitch for increased pull-out strength;
  3. Double thread of non-uniform geometry, adding to the clamping effect.

The Procut screws are available in the following range of head types:

  1. Large wafer head providing maximised setting force and pull-through capacity.
  2. Countersunk head with special pockets underneath, enabling visually appealing flush installation in any kind of wood or wood-based material.
  3. Cylindrical socket head enabling deep screw embedment for timber structure reinforcement.
łączenie elementów drewnianych
Thanks to the well-fitted bit socket, Procut screws can be screwed in with one hand.

Types and applications of the Procut timber screws

The Procut line timber screws for professional applications come in as many as five variants.

R-PTX with countersunk head and partial thread – for general wood applications as well as timber construction and structural joints. This is the most versatile screw, suitable for working in construction timber, wooden boards, OSB, plywood, and solid wood panels (SWP).

The R-PTX screw is available in diameters ranging from 3.0 to 8.0 mm and lengths of 20–400 mm.

R-PTK with wafer (washer) head and partial thread for increased load capacity. Versatile high-quality screw dedicated to fixing and fastening work in construction timber, structural framework elements, rafters and purlins, heavy wooden structures, structural landscaping, wooden fencing, as well as installation of other wooden elements. It is suitable for construction timber, wooden boards, OSB, plywood, and SWP.

The R-PTK comes in two diameter variants: 6.0 or 8.0 mm, and lengths ranging from 40 to 400 mm.

R-PVS with countersunk head and full thread, intended for reinforcement jobs and structural joints, fitting perfectly to the surface and causing no damage to the base material thanks to eight under-head pockets of unique design. This is by far the best choice for the timber joints intended to carry the heaviest loads, dedicated mainly to construction timber, wooden boards, and SWP.

The R-PVS screws come in a particularly wide range of diameters from 3.0 to 12.0 mm. This Procut variant is available for purchase in lengths ranging between 16 and 600 mm.

R-PVZ with cylindrical socket head and full thread for deep embedment. The head design makes this screw perfect for concealed joints of wooden elements, but it will prove equally remarkable where timber structures need reinforcement in the most crucial points. It is also suitable for heavy structures.

The R-PVZ comes in three diameter options: 6.0, 8.0, and 10.0 mm, as well as in lengths ranging from 80 to 600 mm.

R-PCZ with cylindrical socket head and double thread for additional clamping force. Certified screws of the highest quality intended for structural timber and solid wood panels. With the thread of unique design, they produce infallible joints by clamping the surfaces of the elements connected with unmatched effectiveness. 

The R-PCZ Procut line timber screws come in two diameters: 6.5 and 8.5 mm, as well as in lengths ranging at 65–400 mm. 

The wide selection of the Procut screws and their extensive range of applications make this line of products a comprehensive solution for work in timber structures and secure joining of wooden elements.

Find the matching screwdriver bits!

It’s very easy to match the right screwdriver bits to your Procut timber screws! Choose between the RT–BIT–TORX and RT–IBIT–T.

PROCUT construction screws - video tutorial

[video] Have a look at the Procut screws in action!

Use the EasyFix software to calculate how many screws you need

On top of all the above mentioned advantages offered by the Procut screws, you can also use our EasyFix software to easily calculate what materials you need when building wooden houses and other wooden structures.

EasyFix do obliczania liczby wkrętów
Use the EasyFix program to establish the type and quantity of the Procut timber screws you need.

The software allows you to find out exactly which timber screws you should choose and how many of them you require to complete a given job.

The program features four modules under the Wood Construction Screws category:

  • general connection,
  • side to main joist connection,
  • support reinforcement,
  • notch reinforcement.

Using the EasyFix program while building wooden structures, you can avoid making construction and investment mistakes.

Learn more about the EasyFix support for the Procut screws.

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