Will they hold a tv braket up

As long as you go into concrete block or stud uprights they will do the job. I used the 100mm to mount a squat rack and pull up bar in the garage (concrete Block) which is easily taking the weight of me (120kg) and the fully loaded bar (200kg) so TV should be fine.

WHow many "mm" is the screw head please...

The screw head diameter is 12 mm and the countersunk head is 3 - 4 mm deep.

Can these screws be used on thermalite concrete blocks

I have put them in breeze blocks they have held so far

Which type would give a more secure fixing in older breeze blocks, a 80mm screw or bolt?

Not sure to be fair as I used these screws to secure a 3" x 1.5" timber beam to brick work. As breeze block is not as solid as brick l would suggest that bolt fixings might be a better option. As the screws are probably less expensive than bolts, could you not try them first?

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SEQUAL 50mm Concrete Screws 20 Pack, Countersunk Torx Masonry Screws for Concrete, Brick & Stone, Direct Concrete Fixing Screws, T30 Torx Driver Bit Included

SEQUAL 50mm Concrete Screws 20 Pack, Countersunk Torx Masonry Screws for Concrete, Brick & Stone, Direct Concrete Fixing Screws, T30 Torx Driver Bit Included

Product ID: 281994152

Details

Exterior finish
Steel Zinc
Head style
Flat
Material
High Strength
Point style
Sharp
Thread size
UNC

🔩50mm length for versatile fixing

⚙️T30 Torx head for max torque

🛠️High/low thread for superior grip

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Description

🔧 Screw it right, screw it tight—SEQUAL secures your space with pro-grade precision!

FLUSH FIRM - Countersunk Torx head with five locking ribs delivers a sleek, flush finish and reduces cam-out for professional results.
BUILT TO LAST - Heat-treated high-strength steel with yellow zinc finish ensures corrosion resistance and durability indoors or sheltered outdoors.
PLUG FREE PRECISION - Direct masonry fixing—no wall plugs needed, saving time and hassle on every project.
GRIP THAT WONT QUIT - Deep high/low serrated threads provide exceptional pull-out resistance and clear debris efficiently during installation.
VERSATILE POWERHOUSE - Perfect for concrete, brick, stone, and timber—ideal for window frames, door frames, battens, and general fixing tasks.

The SEQUAL 50mm Concrete Screws 20 Pack offers a premium direct-fix solution for concrete, brick, and stone without plugs. Crafted from heat-treated high-strength steel with a corrosion-resistant yellow zinc finish, these countersunk Torx screws feature deep high/low threads for superior grip and come with a T30 driver bit for effortless installation. Ideal for a wide range of professional and DIY masonry applications, they combine durability, efficiency, and a flush, clean finish.

Specifications

ASIN	B07Y8PT2X4
Best Sellers Rank	5,572 in DIY & Tools ( See Top 100 in DIY & Tools ) 80 in Screws (DIY & Tools)
Brand Name	SEQUAL
Colour	Yellow
Compatible Groove Diameter	0.21 Inches
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (1,966)
Drive System	Torx
Exterior Finish	Steel,Zinc Yellow
Fastener Size	50
Fastener Type	Self-Drilling Screws
Finish Types	Zinc Plated
Grade Rating	Grade 8.8
Head Type	countersunk
Item Diameter	50 Millimetres
Manufacturer	My Hardware Shop
Manufacturer Part Number	1
Material Type	High Strength Steel
Metal	Alloy Steel
Number Of Items	20
Number of Packs	1
Number of Pieces	20
Outside Diameter	50 Millimetres
Screw Head Style	Flat
Screw Point Style	Sharp
Set Name	SEQUAL 50mm Easy Drive Countersunk Concrete Screw Set (20 Piece)
Set Screw Thread Type	UNC (Unified National Coarse)
Size	50
Thread Class	V-thread
Thread Coverage	Partially Threaded
Thread Size	UNC
Thread Style	high/low
Thread Type	UNC
UPC	651650676178
Unit Count	20.0 count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₨8778

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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