Hi - what size masonry drill bit is required to pre drill the hole please?

Hi on a masonry screw it is recommended to try a 6mm hole first and depending on density of substrate you may need to increase to a 6.5mm because of resistance.

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AF4F 20 Pack 202mm x 7.5mm Concrete Frame Fixing Screw Window, Door, General ...

AF4F 20 Pack 202mm x 7.5mm Concrete Frame Fixing Screw Window, Door, General ...

Product ID: 444601468

Details

Exterior finish
Zinc
Head style
Flat
Material
Carbon Steel
Point style
Type AB Point
Thread size
7.5mm

🔩20-pack heavy-duty masonry screws

⚙️T30 Torx bit included for precision

🛠️Self-drilling, no plug needed

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€ 22.56

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Description

🔧 Screw it right, screw it tight—your masonry’s new best friend!

PLUG FREE POWER - Cuts its own thread, eliminating the need for anchors or plugs—save time and hassle on every fix.
COMPLETE FIXING KIT - Includes 20 screws plus a premium S2 grade Torx 30 bit—everything you need to get the job done right.
DURABLE ZINC FINISH - Yellow zinc plating offers corrosion resistance, keeping your projects looking sharp and lasting longer.
SLIP RESISTANT HEAD - Flat countersunk T30 head reduces slippage and wear, ensuring a clean, professional finish every time.
VERSATILE MASONRY MASTER - Perfectly engineered for concrete, brick, block, and natural stone—one screw to rule them all.

The AF4F 20 Pack 202mm x 7.5mm Concrete Frame Fixing Screws deliver professional-grade performance with self-tapping V-threads that eliminate the need for plugs or anchors. Designed for a wide range of masonry substrates including concrete, brick, and natural stone, these fully threaded carbon steel screws feature a flat countersunk T30 head for reduced slippage and wear. Finished with durable yellow zinc plating and paired with a free S2 grade Torx 30 bit, this kit ensures precision, longevity, and versatility for all your window, door, and general joinery projects.

Specifications

ASIN	B09RB1QKLD
Best Sellers Rank	4,170 in DIY & Tools ( See Top 100 in DIY & Tools ) 94 in Screws (DIY & Tools)
Brand Name	ALWAYSFIRST 4 FIXINGS
Colour	Yellow Zinc
Compatible Groove Diameter	6 Millimeters
Country Of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (438)
Drive System	Torx
Exterior Finish	Zinc
Fastener Size	7.5mm x 42,52,62,72,82,92,102,122,152,202mm
Fastener Type	Torx 30
Finish Types	Zinc Plated
Global Trade Identification Number	05060865080192
Head Type	Flat
Item Diameter	6 Millimetres
Manufacturer	ALWAYSFIRST 4 FIXINGS
Manufacturer Part Number	20PCONC
Material Type	Carbon Steel
Metal	Carbon Steel
Number Of Items	20
Number of Pieces	20
Screw Head Style	Flat
Screw Point Style	Type AB Point
Set Name	ALWAYSFIRST 4 FIXINGS 20 Pack Masonry Screws
Set Screw Thread Type	Self-Tapping
Size	(20 Pack) 202mm x 7.5mm
Thread Coverage	Fully Threaded
Thread Size	7.5mm
Thread Style	Fully Threaded, V-thread, Serrated
Thread Type	V-threads
Unit Count	20.0 count

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