Multi-Fix Countersunk Concrete Screws 7.5 x 40mm (100/Box)
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Tue 9 Jun
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- 12hrs
- 36mins
- 55secs
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Delivery & Returns Information
Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.
Standard (Nationwide) Delivery
| Screws & Fixings and Adhesives & Sealants | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £75 | £7.50 ex. VAT |
| Over £75 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £90 ex. VAT |
| Over £400 ex. VAT | £55 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
How delivery works
We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery areas
Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.
If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.
What to expect on delivery day
- Deliveries are typically kerbside.
- Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
- Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.
Why delivery can cost more than typical parcel delivery
Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.
Returns
Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.
Key Features
- {{check_circle}} For use in solid concrete, brick, block and masonry
- {{minimize}} Countersunk head creates a smooth, flush finish
- {{fitness_center}} Ensures secure and long-lasting joints
- {{checklist}} Compatible with several substrates
Technical Specification
| URN: | 1001062 |
|---|---|
| Indoor/Outdoor Usage: | Indoor |
| Material Type: | Carbon Steel |
| Length: | 40mm |
| Diameter: | 7.5mm |
| Sales Unit: | Box |
| Box Quantity: | 100 |
| Head Type: | Countersunk |
| Drive Type: | TX |
| Thread Length: | Fully Threaded |
| Collated: | No |
Product Overview
7.5 × 40mm Multi-Fix Countersunk Concrete Screws for direct installation into solid concrete, brick, block, or masonry substrates without the use of a plug.
Manufactured from case-hardened carbon steel with a durable zinc-plated finish, they provide rapid installation, high pull-out resistance, and dependable torque control.
The countersunk head produces a neat, flush finish ideal for visible or surface-mounted fittings, while the serrated single-thread design ensures fast cutting action and secure anchorage even in dense substrates.
7.5 × 40mm sizing is optimised for light-duty applications such as conduit clips, battens, and small brackets in solid walls.
Features & Benefits
- Material composition: Case-hardened carbon steel delivers superior torsional strength and thread retention under load.
- Drive type: Pozi recess ensures precise torque transfer and reduced cam-out under sustained drive.
- Head design: Countersunk form provides a flush, professional finish against timber or metal components.
- Thread form: Serrated single-thread profile enables rapid cutting and high mechanical interlock in masonry.
- Corrosion resistance: Zinc-plated coating to ISO 2081 provides reliable protection in dry interior environments.
- Nominal size: 7.5 × 40mm.
- Box quantity: Supplied in a box of 100 for consistent trade supply and efficient multi-project use.
Applications
- Conduit and cable clips: Secure fastening to blockwork or solid brick surfaces.
- Battens and framing: Ideal for timber battens, rails, and wall plates.
- Brackets and fittings: Provides reliable anchorage for interior metal or timber fixtures.
Installation Guidance
- Pilot holes: Drill 6mm pilot holes using an SDS or masonry bit to a minimum of 10mm beyond embedment depth.
- Drive selection: Use a Pozi No.3 bit for controlled torque application and stable recess engagement.
- Insertion method: Drive at moderate speed without hammer action to maintain thread integrity.
- Finishing: Tighten until the head seats flush; avoid overtightening to prevent substrate cracking.
Compliance & Performance
- Manufacture standard: Produced to EN 14592 for mechanical fasteners and tested in accordance with ETA performance protocols.
- Mechanical strength: Case-hardened for enhanced torsional capacity and consistent pull-out performance in solid materials.
- Surface finish: Zinc electroplated to ISO 2081 for internal corrosion protection.
- Safety guidance: Always wear eye and hearing protection when drilling or fixing.
- Important note: Suitable only for non-cracked, sound masonry and concrete. Not designed for friable substrates or load-bearing structural anchorage.
