Concrete frame screws are long hardened screws that fix window and door frames straight into concrete, brick or block, without plugs. The thread cuts into the masonry, and a small head sits neatly inside the frame profile. Because there is no expansion, the frame is not pulled out of shape.
Linkworld supplies concrete frame screws from 5.0 to 7.5 mm in diameter, with 7.5 mm the most common, and 32 to 200 mm long, in hardened carbon steel and stainless steel. We pack in bulk cartons or in your own branded packs for window, door and fixing distributors.
Concrete Frame Screw Specifications
| Specification | Configuration |
|---|---|
| Product | Concrete frame screw / window frame screw |
| Diameter | 5.0 to 7.5 mm; 7.5 mm most common |
| Lengths | 32 to 200 mm |
| Head | Countersunk or cylinder head |
| Drive | Torx T30 or to drawing |
| Material | Hardened carbon steel; stainless steel |
| Finish | Zinc, yellow zinc or galvanised |
| Packing | Bulk cartons, own-brand boxes and small packs |
Other sizes and finishes can be made to drawing or sample.
Where Concrete Frame Screws Are Used
- Window frames aluminium, timber and uPVC frames into masonry
- Door frames fixing jambs into concrete and brick
- Timber battens into concrete walls
- Renovations replacement windows in existing openings
Choosing Concrete Frame Screws
- Length: cover the frame depth and packing gap plus the embedment into the masonry.
- Head: countersunk for flush fixing in the frame; cylinder head to sit inside narrow profiles.
- Finish: zinc for protected interior fixing, galvanised or stainless for exposed frames.
- Drill size: use the drill size the screw is designed for.
Common Purchasing Mistakes
Screws too short. Allow for the packing gap between the frame and the wall.
Over-tightening. Frame screws should hold the frame, not pull it out of line.
Wrong drill size. Too big a hole loses grip.
Mixing head styles. Countersunk and cylinder head screws should have separate codes.
What to Send with Your Enquiry
| Item | What to tell us |
|---|---|
| Size | Diameter and length |
| Head and drive | Countersunk or cylinder; Torx size |
| Material and finish | Carbon or stainless; zinc, yellow zinc or galvanised |
| Quantity | Quantity for each size |
| Packing | Bulk carton, own-brand box or small pack |
| Destination | Destination port |
Packing and Supply for Distributors
We pack frame screws in bulk cartons for trade distribution, or in your own branded boxes, buckets and small packs for retail. Each size can carry its own label. For customers who plan several deliveries through the year, we offer free warehouse storage and staged shipments.
Work With Linkworld
Linkworld has more than 20 years of fastener export experience and runs its own cold heading workshop. Our own QC team checks thread, hardness, head and coating in our inspection room before every shipment. We make screws to drawing or sample, so special lengths and heads are welcome.
Frequently Asked Questions
What is a concrete frame screw?
It is a long hardened screw that fixes window and door frames directly into concrete or masonry without plugs.
What size are frame screws?
7.5 mm is the common diameter, with lengths from about 40 to 200 mm.
Why use frame screws instead of plugs?
They install through the frame in one step and do not expand, so the frame is not distorted.
What drive do frame screws use?
Torx T30 is common on 7.5 mm frame screws.
Do you supply stainless frame screws?
Yes. We supply stainless steel as well as hardened carbon steel.
Looking for concrete frame screws in your own sizes or packs?
Send the sizes, finish, quantity and packing you need through the enquiry form below, and our team will reply with the options that fit your range.
Send an Enquiry
Send a drawing, sample or clear reference photo. Add the quantity and application if available, and we can start from the information you already have.