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

The Owlett Jaton Concrete Screw Countersunk 7.5mm x 100mm [100 Box] is a professional-grade, self-tapping masonry fixing engineered for direct installation into concrete, brick, dense block, and stone — no plastic plug required. Supplied by Hexstone Limited under the trusted JCP Fixings brand, this countersunk concrete frame screw is a go-to choice for UK trade professionals and serious DIYers who need a fast, reliable, and flush-finish fixing solution.

Key Features and Specifications

• Dimensions: 7.5mm diameter × 100mm length
• Material: Carbon steel, case-hardened for high torsional strength and pull-out resistance
• Finish: Zinc and yellow passivated (Z&Y) — enhanced corrosion resistance for internal and sheltered external use
• Head type: Flat countersunk with locking ribs for a flush, secure seating
• Drive: Torx T30 (TX30) — reduces cam-out and driver wear
• Thread: Serrated high-low V-thread for optimum cutting action and anchorage in all masonry types
• Pilot hole: 6mm (standard masonry); 6.5mm for high-density concrete
• Minimum embedment depth: 50mm; minimum hole depth: 60mm
• Maximum fixture thickness: 50mm
• Pack quantity: 100 screws per box — trade-ready supply
• Included: TX30 Torx driver bit
• Non-expansion fixing: Undercutting action provides positive anchorage without stress on the base material
• Fire performance: All-steel, non-flammable construction — compliant with BS 7671 18th Edition wiring regulations
• Brand: Owlett Jaton / JCP Fixings (Hexstone Limited)

Applications

• Fixing window and door frames to concrete, brick, or blockwork
• Securing timber sole plates and roof plates to masonry substrates
• Anchoring cable management, conduit, and electrical containment systems
• Attaching metal brackets, lintels, and structural supports to concrete walls
• Fencing post base plates and landscaping fixings into concrete
• General frame fixing and through-fixing applications on residential and commercial sites

Why Choose This Product

As a plug-free, one-piece fixing, the Owlett Jaton 7.5mm × 100mm concrete screw eliminates the time and cost of separate wall plugs, making it significantly faster to install than traditional nylon frame fixings or hammer fixings. The zinc and yellow passivated finish provides reliable corrosion resistance for internal and sheltered applications, while the all-steel construction meets BS 7671 fire performance requirements — an important compliance consideration on regulated installations. Supplied in a trade box of 100 with a TX30 bit included, this product offers excellent value for contractors, window fitters, and builders working at volume.

Delivery in and Around London

We deliver the Owlett Jaton Concrete Screw Countersunk 7.5mm x 100mm [100 Box] to trade and retail customers across London and the surrounding region. Inner London boroughs served include Croydon, Lewisham, Southwark, Camden, and Hackney, with Greater London coverage extending to Enfield, Bexley, Redbridge, and Barnet. We also supply to the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities are welcome, and bulk orders can be accommodated — contact us for volume pricing and lead times.