The TIMco TX25 C2 Clamp-Fix Multi-Purpose Screws deliver high-performance timber-to-timber fasteni...The TIMco TX25 C2 Clamp-Fix Multi-Purpose Screws deliver high-performance timber-to-timber fastening engineered to eliminate jacking for secure, stable connections. Precision-manufactured with patented twin-cut technology and dual-angle threading, these 5.0 x 70mm screws provide exceptional pull-out resistance and rapid installation. The advanced polymer lubricant coating reduces insertion torque by up to 52% while delivering corrosion protection 20 times superior to standard zinc plating. The precision TX drive recess prevents cam-out, ensuring positive drive control throughout installation. Ribs beneath the countersunk head facilitate smooth, flush finishing without material damage or splitting. Supplied in boxes of 200, these yellow-finished screws are optimised for professional carpentry, joinery, construction applications, and demanding DIY projects requiring reliable timber fixings. Features & Benefits: Patented twin-cut technology ensures rapid pick-up and minimises timber splitting during installation. Dual-angle thread design delivers exceptional pull-out resistance and superior clamping performance. High-molecular polymer lubricant coating reduces insertion torque by up to 52% for easier driving. Corrosion protection up to 20 times longer than standard zinc plating for enhanced durability. Precision TX drive recess prevents cam-out, ensuring controlled and accurate driving. Ribs under countersunk head provide improved countersinking and flush finishing without splitting. Engineered to prevent timber jacking, maintaining secure and stable connections. Ideal for professional carpentry, joinery, construction and high-demand DIY timber applications. Size: 5.0 x 70mm. Box Quantity: 200. A premium multi-material screw featuring the award winning C2 twin-cut technology. The dual angle partial thread and high torque TX drive ensures maximum clamping strength on every fixing. Designed to prevent the timber from ‘jacking’ apart when fastening timber to timber. Ideal for applications such as timber studwork, panelling, roof and decking framework. CE Standard WebBS EN 14592:2008 Corrosion Rating 2 - Occasionally damp/wet, rural and sheltered areas Description A premium multi-material screw featuring the award winning C2 twin-cut technology. The dual angle partial thread and high torque TX drive ensures maximum clamping strength on every fixing. Designed to prevent the timber from ‘jacking’ apart when fastening timber to timber. Ideal for applications such as timber studwork, panelling, roof and decking framework. Driver Bit Size TX25 Finish Zinc & Yellow Gauge 10 Head Dia. mm 9.70 Head Type Double Countersunk Inner Thread Dia. mm 2.95 Length inch 2 Length mm 70 Lubrication Wax Material Carbon Steel Max Clamping Fixture Thickness mm 30 Pack Dimensions L x W x H mm 135 x 90 x 90 Pack Weight kg 1.18 Point Type Twin-Cut Product Code 50070C2C Recess Type TX Drive Size imp. 10 x 2 Size mm 5.0 x 70 Substrates Hardwood, Softwood, Chipboard, MDF, Plastic, Thin Sheet Metal Thread Dia. mm 5.0 Thread Length mm 40 Thread Type 40° Single.
TIMCO C2 Clamp-Fix TX25 CSK ZYP 5.0 x 70 Gold Pack 200Free delivery in 1–3 days£13.95Visit shop →
Product Information
Full details
The TIMco C2 Clamp-Fix Multi-Purpose Screws (5.0 x 70mm, Yellow, 200 Pack) are designed for professional carpenters, joiners, builders, and serious DIYers seeking high-performance timber-to-timber fastening. Their key benefit is engineered stability, preventing timber jacking for secure, lasting connections, though their specialized drive may require a specific bit. These screws feature patented twin-cut technology, dual-angle threading for superior pull-out resistance, a reduced insertion torque due to a advanced polymer lubricant coating, and a precision TX drive for reliable installation.
All features
Colour
Yellow
Model Part Number
50070C2C
Brand
TIMco
Extended Product Information
FAQs
What is the main advantage of the C2 Clamp-Fix technology?
The primary advantage is its engineered design to prevent timber 'jacking' apart during fastening, ensuring secure and stable connections between timber components.
Do I need to pre-drill holes for these screws?
For most softwood applications, pre-drilling is often unnecessary due to the twin-cut technology. For very hard woods or to guarantee perfect alignment, a pilot hole can be beneficial.
What type of driver bit do I need?
You will need a TX25 driver bit for the precision TX drive recess.
How does the lubricant coating help?
The advanced polymer lubricant coating reduces insertion torque by up to 52%, making the screws easier and faster to drive, reducing user fatigue and wear on power tools.
What does 'Corrosion Rating 2' mean?
Corrosion Rating 2 indicates suitability for environments that are occasionally damp or wet, such as rural and sheltered outdoor areas. It offers significantly better protection than standard zinc plating.
Can these screws be used for metal or plastic?
Yes, these screws are designed as multi-purpose and are compatible with various substrates including plastic and thin sheet metal, in addition to different types of timber and boards.
What is the recommended application for these screws?
They are ideal for timber studwork, panelling, roof and decking framework, and other demanding professional carpentry, joinery, and construction applications.
Troubleshooting
Screw cam-out during driving
Ensure you are using the correct TX25 driver bit and that it is fully seated in the screw recess. Apply firm, consistent pressure during driving.
Timber splitting during insertion
While designed to minimize splitting, very hard timbers may benefit from a pilot hole. Ensure the twin-cut point is engaging correctly before driving.
Screw not driving straight
Ensure the timber surfaces are aligned correctly before starting the screw. Use a guide or clamp if necessary to maintain alignment.
Slow insertion despite lubricant
Check that the timber is within the compatible substrate list. Very dense hardwoods may require slightly more effort, or a pilot hole for significantly easier driving.
Screw head not sitting flush
The ribs under the head assist countersinking. Ensure you are not over-driving the screw. If necessary, a slightly larger drill bit can be used to widen the countersink hole gently.
Pros and Cons
Pros
Engineered to prevent timber jacking, ensuring stable and secure connections.
Significantly reduces insertion torque (up to 52%) for easier and faster installation.
Offers superior pull-out resistance due to dual-angle threading.
Provides excellent corrosion resistance (20x standard zinc plating).
Precision TX drive prevents cam-out for reliable fastening.
Minimizes timber splitting with twin-cut technology.
Cons
Requires a specific TX25 driver bit, which may not be standard in all toolkits.
The yellow finish, while offering corrosion resistance, may not be suitable for all aesthetic requirements.
Primarily designed for timber-to-timber applications; performance on other materials may vary.
The specific 'C2 Clamp-Fix' technology might be overkill for very light-duty projects.
Best performance achieved with power tools due to reduced torque requirements.
Setup, Compatibility & Care
Setup:
Ensure you have a TX25 driver bit compatible with your drill or impact driver. The precision TX drive is crucial for preventing cam-out.
Align the screw with the timber pieces you intend to join.
Drive the screw using your power tool, applying steady pressure. The lubricant coating will assist in smooth insertion.
Compatibility:
Substrates: Optimized for Hardwood, Softwood, Chipboard, MDF, Plastic, and Thin Sheet Metal.
Applications: Timber studwork, panelling, roof and decking framework, general joinery, and construction.
Corrosion Rating: Suitable for Corrosion Rating 2 (Occasionally damp/wet, rural and sheltered areas).
Care:
These screws are designed for single-use permanent fixing. Do not reuse them.
Store in a dry environment to maintain the integrity of the lubricant coating and corrosion protection.
Clean any dust or debris from the screw head recess before driving to ensure optimal bit engagement.
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