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

🔩Flat countersunk T30 head reduces slippage

⚙️Self-drilling, no plug needed

🛠️202mm length for deep, secure fixing

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AR$92137

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Fix like a pro, finish like a boss.

PLUG FREE PRECISION - Cuts its own thread, eliminating anchors for a sleek, hassle-free install
BONUS PRO BIT INCLUDED - Free S2 grade Torx 30 bit for effortless driving and reduced wear
DURABILITY MEETS DESIGN - Zinc-plated finish resists corrosion while the flat head ensures a flush, professional look
UNIVERSAL MASONRY MASTER - Engineered to fix concrete, brick, block, and natural stone with unmatched reliability
MINIMIZED MATERIAL DAMAGE - No expansion means less brick breakout—preserve your surfaces with every fix

The AF4F 202mm x 7.5mm Concrete Frame Fixing Screw (20 Pack) is a premium masonry fastening solution designed for professionals and DIY enthusiasts alike. Featuring self-drilling technology that eliminates the need for plugs or anchors, these screws deliver secure, clean fixes into concrete, brick, block, and natural stone. The zinc-plated, flat countersunk T30 head reduces slippage and wear, while the included high-grade Torx 30 bit ensures efficient installation. Perfect for window, door, and general joinery applications, this pack offers durability, precision, and a flawless finish every time.

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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