Our 100-piece pack of Concrete Frame Screws (7.5 x 120mm) offers a high-strength, plug-free solution for securing uPVC, timber, or aluminum frames directly into masonry. These specialized fasteners feature a self-tapping thread that cuts directly into concrete, brick, or stone, providing a permanent and vibration-resistant hold.
No Plug Required: Direct-to-masonry installation saves time and reduces material costs on-site.
T30 Torx Drive: Deep star-drive recess ensures maximum torque transfer and eliminates cam-out.
Versatile 120mm Length: The industry-standard size for fixing window frames through cavities and into structural brickwork.
£9.99 Incl. VAT
Concrete frame screws (also known as masonry bolts or thunderbolts) are the professional’s choice for heavy-duty structural fixings. The 120mm length is specifically engineered to bridge the gap between a modern window frame and the inner leaf of a building. Unlike traditional expansion bolts, these concrete frame screws do not exert outward pressure on the masonry, making them the safest choice for fixing near the edges of brickwork or in older, more fragile stone.
Driving a 120mm fastener into solid masonry requires significant torque. Our concrete frame screws utilize a T30 Torx (Star) drive system, which provides a superior mechanical grip between the screwdriver bit and the screw head. This ensures that the concrete frame screws can be driven home at high speeds without the bit slipping or stripping the head, even when working with high-density engineering bricks or reinforced concrete.
At ECO HEAT SHOP, we supply fixings designed for structural reliability. These concrete frame screws feature a unique “high-low” serrated thread pattern. As the screw is driven into a pre-drilled pilot hole, the hardened threads cut a precise internal thread into the masonry itself. This creates a mechanical interlock that is incredibly resistant to shear and pull-out forces. The bright zinc plating ensures the fixing remains protected against corrosion in both internal and external environments.
Product Name: Concrete Frame Screws
Dimensions: 7.5mm (Diameter) x 120mm (Length)
Pack Size: 100 Pieces
Drive Type: T30 Torx (Star Drive)
Material: Case-Hardened Carbon Steel (Zinc Plated)
Installation Advice: To ensure a successful fix with concrete frame screws, you must first drill a 6.0mm or 6.5mm pilot hole using a high-quality masonry bit. Always drill the hole 10mm to 15mm deeper than the screw’s intended depth to allow room for dust and debris, ensuring the screw can be fully tightened without bottoming out.
| Weight | 0.44 kg |
|---|---|
| Dimensions | 120 × 7.5 × 7.5 mm |
ECO Heat Shop Ltd provides national distribution for plumbing and heating supplies across England, Scotland, and Wales. Orders placed before the 18:00 PM (Afternoon) cutoff are typically processed for same-day dispatch.
View Full Shipping & Collection Policy ›Hours: Monday – Saturday: 08:30 AM – 06:30 PM | Sunday: Closed
Location: Unit 8 West Cross Shopping Centre, Oldbury Rd, Smethwick, B66 1JG
In-shop precision key cutting available during standard operational hours. Professional while-you-wait service for Smethwick residents and trade contractors.
Smart supplies for real heat.
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