What size would I need if my sleepers are 200x100 and 2.4ft long please?

Hi If you are wanting to screw them together you would ideally need 150mm screw Hope this helps you Paul

How do I work out how long the screws are

In this case the screw has a length of 60 mm from screw tip to shoulder. "Hex Head Timber Screw 6.7 x 60" is a timber screw with an hexagonal head of 6.7 mm and a length of 60 mm.

How long will delivery be?

We will dispatch on Monday on a next day delivery but it is not guaranteed carriers are struggling a bit at the moment but it is dhl/Uk mail

How does this work as I need to join two sleepers together so they're sat tight? Do you need pilot hole and if so what screw size?

You don't need a pilot hole but you want 6.7 x250 self screwing screws if you are joining the sleepers one on top of the other edge wise.

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TIMCO 150IN Index Hex Head Timber Screw 6.7x150 - Organic Green (Box of 50)

TIMCO 150IN Index Hex Head Timber Screw 6.7x150 - Organic Green (Box of 50)

Product ID: 57363805

Details

Exterior finish
Exterior
Head style
Hex
Item dimensions L x W x H
15 x 0.7 x 0.7
Material
Carbon Steel
Thread size
#0-80

🔩50° deep single thread for max grip

⚙️6.7mm diameter precision

🛡️1000h salt spray corrosion resistance

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Description

🔧 Screw it right, screw it tight — the pro’s choice for timber mastery!

HEX HEAD POWER - Ensures a rigid, secure fit with easy socket or ratchet driving
BOX OF 50 SCREWS - Bulk supply for multiple projects—never run out mid-build
HELIX SHANK DESIGN - Effortlessly clears debris for a cleaner, stronger hold
PATENTED LUBRICATION TECH - Speeds up screw insertion, saving you time on every project
CORROSION RESISTANT COATING - Withstands harsh outdoor conditions with 1000 hours salt spray test

The TIMCO 150IN Hex Head Timber Screw (6.7x150mm) is a premium carbon steel fastener engineered for timber-to-timber applications. Featuring patented lubrication for faster insertion, a helix shank to remove debris, and a 50° deep single thread for superior pull-out resistance, it boasts a multi-layer corrosion-resistant green finish that endures 1000 hours of salt spray. Supplied in a box of 50, these screws combine durability, strength, and ease of use, making them ideal for demanding outdoor projects like pergolas and raised beds.

Specifications

ASIN	B00KV766PU
Best Sellers Rank	929 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Self-tapping Screws
Brand Name	TIMCO
Colour	Green
Compatible Groove Diameter	6.7 Millimeters
Country Of Origin	United Kingdom
Customer Reviews	4.7 4.7 out of 5 stars (4,392)
Drive System	External Hex
Exterior Finish	Exterior (Green Organic)
Fastener Size	6.7mm x 150mm
Fastener Type	Wood Screws
Finish Types	Corrosion Resistant Plating and Green Ecological Finish
Global Trade Identification Number	05055331860859
Head Angle	50 Degrees
Head Type	Hex Flange
Included Components	Box of 50 Screws
Item Diameter	6.7 Millimetres
Item Dimensions	15 x 0.7 x 0.7 centimetres
Item Type Name	TIMCO Index Screws - 150IN
Item Weight	1.3 Kilograms
Manufacturer	TIMco
Manufacturer Part Number	150IN
Material Type	Carbon Steel
Maximum Shear Strength	[APPROX] Entre 400 y 700 MPa
Metal	Carbon Steel
Model Number	150IN
Number Of Items	50
Number of Pieces	50
Screw Head Style	Hex
Screw Point Style	Standard tip
Set Name	TIMCO 150IN Index Hex Head Timber Screw Set (50 Piece)
Set Screw Thread Type	UNC
Size	6.7 x 150mm
Thread Class	2B
Thread Coverage	Partially Threaded
Thread Size	#0-80
Thread Style	Right Hand
Thread Type	UNC
Unit Count	50.0 count

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