Self tapping concrete frame screws for fixing timber and metal frames directly into masonry without plugs.
- Self tapping thread, no plugs required
- Torx T30 drive head, T3 bit included FOC with each box
- BZP finish for corrosion resistance
- Suitable for concrete, brick and blockwork
- Countersunk head for a flush finish
- For fixing timber or metal to masonry (window and door frames)
- Available in lengths 52mm to 152mm, pack of 100
- “To Order” icon may not always be available from stock for same-day or next-day delivery. Please contact our team, who will be happy to confirm exact delivery dates.
MAXFIX Concrete Frame Screws - Self Tapping and BZP Finish
Self tapping concrete frame screws for fixing timber and metal frames directly into masonry without plugs.
- Self tapping thread, no plugs required
- Torx T30 drive head, T3 bit included FOC with each box
- BZP finish for corrosion resistance
- Suitable for concrete, brick and blockwork
- Countersunk head for a flush finish
- For fixing timber or metal to masonry (window and door frames)
- Available in lengths 52mm to 152mm, pack of 100
- “To Order” icon may not always be available from stock for same-day or next-day delivery. Please contact our team, who will be happy to confirm exact delivery dates.
MAXFIX Concrete Frame Screws - BZP Finish
Concrete frame screws built for fast, secure fixing of timber and metal frames directly into masonry, without needing plugs. The self tapping thread cuts its own path into concrete, brick and blockwork, while the Torx T30 drive head gives improved grip and reduces cam-out during installation. BZP finish provides reliable corrosion resistance for internal applications.
How self tapping eliminates the plug-and-screw failure point
Traditional plug-and-screw fixings rely on the plug expanding correctly inside the drilled hole, and a plug that spins, crumbles or doesn't grip properly means the whole fixing fails before the screw is even driven. That's an extra point of failure and an extra step in an installation that should be straightforward. Self tapping concrete frame screws remove that step entirely, cutting their own thread directly into the masonry as they're driven, giving a secure fixing without relying on a separate plug to hold.
Key Features
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Self tapping thread: Cuts directly into concrete, brick and blockwork as the screw is driven, removing the need for plugs.
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Torx T30 drive head: Improves grip during installation and reduces cam-out compared with a standard Phillips or slotted head.
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BZP finish: Bright zinc plated coating provides corrosion resistance suited to internal fixing applications.
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High pull-out strength: Interlocking thread design gives strong holding power once driven into masonry.
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Countersunk head: Sits flush with the surface for a neat, finished appearance.
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Push through installation: Designed for through fixing into metal and plastic window frames without pre-marking or repositioning.
Who is this for
Trades and roles:
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Window and door fitters
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Carpenters and joiners
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General builders
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Fit-out and installation teams
Industries:
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Construction
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Joinery and fenestration
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Building refurbishment
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General fit-out
Specifications
| Specification | Detail |
| Product Name | MAXFIX Concrete Frame Screws - Self Tapping and BZP Finish |
| Parent Code | FF08000 |
| Brand | MAXFIX |
| Thread Type | Self tapping |
| Drive Type | Torx T30, bit included |
| Finish | BZP, Bright Zinc Plated |
| Diameter | 7.5mm |
| Head Type | Countersunk |
| Suitable Substrates | Concrete, brick, blockwork |
| Typical Applications | Window frames, door frames, timber battens, metal sections |
| Lengths Available | 52mm to 152mm, see variations table below |
| Pack Quantity | 100 |
Compatibility
| Application or condition | Status |
| Concrete, brick and blockwork substrates | ✓ Compatible |
| Timber frame fixing into masonry | ✓ Compatible |
| Metal and plastic window frame push through installation | ✓ Compatible |
| Internal fixing applications | ✓ Compatible |
| External applications exposed to sustained moisture | ✗ Not recommended |
| Use without a Torx T30 driver bit | ✗ Not recommended |
| Lightweight or hollow substrates (plasterboard, thin panel) | ✗ Not recommended |
Who is this for
This screw range is used by window and door fitters fixing frames directly into masonry without needing to drill and plug separately. Carpenters and general builders use it for fixing timber battens and framing systems into concrete, brick and blockwork. It suits any fit-out task needing a fast, reliable through fixing into masonry substrates.
Typical applications
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Fixing window and door frames directly into masonry.
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Securing timber battens and framing systems to concrete, brick or blockwork.
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Push through installation of metal and plastic window frames.
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General fit-out fixing tasks into masonry substrates.
How to use
Step 1: Select the correct screw length for the frame and substrate thickness.
Step 2: Position the frame and drill a pilot hole through the frame into the masonry if required for the substrate.
Step 3: Drive the screw using a Torx T30 bit, letting the self tapping thread cut into the masonry.
Step 4: Continue driving until the countersunk head sits flush with the surface.
Step 5: Repeat at each fixing point, checking the frame remains square and secure throughout.
Common mistakes
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Using the wrong screw length for the frame and substrate combination, resulting in insufficient embedment.
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Driving the screw without a Torx T30 bit, increasing the risk of cam-out and a damaged head.
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Over-tightening and stripping the fixing point in softer masonry.
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Using this BZP finish screw in an external application with sustained moisture exposure, where a more corrosion resistant finish is needed.
Safety
These screws are designed for internal applications given the BZP finish, and aren't recommended for external use with sustained moisture exposure. Use the correct Torx T30 bit to avoid cam-out and head damage during installation. Ensure adequate embedment depth into the masonry substrate for a secure, load-bearing fixing.
Maintenance
No ongoing maintenance is required once correctly installed. Store unused screws in their original packaging in a dry location to prevent surface corrosion before use.
Frequently Asked Questions
Q: Do I need to drill and plug the masonry before fixing?
A: No, these are self tapping screws designed to cut their own thread directly into concrete, brick or blockwork as they're driven. A pilot hole may still be needed depending on the substrate, but no separate plug is required, which removes a common point of failure in traditional fixings.
Q: What does the BZP finish mean, and is there a specific standard it meets?
A: BZP stands for Bright Zinc Plated, a corrosion resistant coating suited to internal applications. There's no specific EN standard covering this product category, so finish type and thread design are the main specifications to check when comparing frame screws for a given application.
Q: What is this screw NOT suitable for?
A: This BZP finish screw isn't recommended for external applications with sustained moisture exposure, where a more corrosion resistant finish would be needed instead. It also isn't suitable for lightweight or hollow substrates like plasterboard, which need a different fixing type entirely.
Q: Why use a Torx T30 head instead of a standard Phillips head?
A: A Torx head gives significantly more grip between the bit and the screw than a Phillips or slotted head, reducing the risk of cam-out, where the bit slips and damages the head during installation. This matters particularly on longer screws requiring more driving force.
Q: Can this screw be used for push through installation on window frames?
A: Yes, it's specifically designed for push through installation into metal and plastic window frames, allowing the screw to be driven through the frame directly into the masonry without pre-marking or repositioning.
Q: Which length should I choose for my application?
A: Length depends on the frame thickness and the embedment depth needed into the masonry substrate. This range covers 52mm through to 152mm, check the variations table above for the full range and select a length that gives sufficient embedment beyond the frame thickness.
Q: Is the Torx bit included with the screws?
A: Yes, a T30 Torx bit is included free of charge with each box, so no separate bit purchase is needed to install these screws.
