Concrete Screw Countersunk 7.5mm x 120mm [100 Box]

Concrete Screw Countersunk 7.5mm x 120mm [100 Box] by Owlett Jaton is a professional-grade, self-tapping masonry fixing engineered for direct installation into concrete, concrete blocks, brick, and stone. Distributed under the JCP Fixings brand — part of Owlett-Jaton (Hexstone Limited), the UK and Ireland’s leading wholesale fastener supplier — this screw delivers a positive, non-expansion anchorage that suits both trade contractors and serious DIY builders. The 120mm length and 7.5mm diameter make it the go-to choice for deeper embedment applications where shorter screws simply won’t hold.

Key Features and Specifications

• Diameter: 7.5mm
• Length: 120mm
• Head type: Flat countersunk with five locking ribs
• Drive: TX30 (Torx) — reduces cam-out and driver wear
• Material: Carbon steel
• Finish: Zinc and yellow passivated (Z&Y) for corrosion resistance
• Fixing action: Undercutting self-tapping thread — no expansion forces, no substrate splitting
• Drill hole required: 6mm (6.5mm for dense/solid concrete)
• Fixture clearance hole: 8mm
• Maximum fixture thickness: 70mm
• Minimum hole depth: 60mm
• Minimum embedment depth: 50mm
• Pack quantity: 100 screws per box
• Brand: Owlett-Jaton / JCP Fixings (Hexstone Limited)

Applications

• Fixing uPVC and timber window and door frames directly to masonry walls
• Securing timber stud work and battens to concrete or blockwork
• Attaching brackets, cleats, and steel channels to brick or concrete
• Installing cable trunking, pipe clips, and support rails in plant rooms
• Dry-lining preparation and service void set-outs on concrete walls
• General timber-to-masonry fixing on new-build and refurbishment sites

Why Choose This Product

Unlike traditional expansion anchors, the undercutting thread cuts its own path without generating outward pressure, making it safe to use close to edges and in aerated or hollow blockwork. The five locking ribs beneath the countersunk head resist loosening under vibration, while the zinc and yellow passivated finish provides reliable protection in dry indoor environments. Supplied in a trade box of 100, this Owlett-Jaton concrete screw offers excellent cost-per-fix value for contractors buying in volume. The included TX30 drive format is compatible with standard impact drivers, keeping installation fast and straightforward on site.

Delivery in and Around London

We deliver the Concrete Screw Countersunk 7.5mm x 120mm [100 Box] to all London boroughs, including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also supply trade customers across the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities are welcome, and bulk orders can be accommodated — contact us for volume pricing. Fast despatch is available on in-stock lines.