Name: Knauf 3.5 x 35mm Drywall Screw TN (1000pcs)
Brand: Fepy
SKU: 16192-NOS
Price: 31.68 AED
Availability: InStock

Question 1

What is the Knauf 3.5 x 35mm Drywall Screw TN used for?

Accepted Answer

It's a self-tapping drywall screw designed to join drywall (plasterboard) to light metal or wood framing. The 3.5×35mm size makes it suitable for securing standard drywall sheets to studs or frames with a secure, flush finish.

Question 2

What does the 'TN' designation mean on this screw?

Accepted Answer

TN indicates Knauf’s drywall screw type with a sharp Type A point designed for drywall applications, optimized for quick tapping and a secure hold.

Question 3

What are the key specifications of this screw?

Accepted Answer

Diameter: 3.5mm, Length: 35mm, Material: hardened carbon steel (heat-treated), Drive: Phillips head, Type: self-tapping with a sharp point, Quantity: 1000 pieces per box.

Question 4

How many screws come in the box and what are common uses?

Accepted Answer

The box contains 1000 screws. They’re commonly used for plasterboard/internal wallboard and ceiling board installations, especially when attaching drywall to light metal or wooden frameworks.

Question 5

How do I install these screws correctly?

Accepted Answer

Use a compatible Phillips screwdriver or drill/driver. Align the drywall and the stud or framework, then drive the screw until the head sits flush with the drywall surface without overdriving, which can damage the board. For metal studs, ensure you’re using the appropriate pilot or tapping action to prevent deforming the metal.

Question 6

Are these screws safe to handle and store?

Accepted Answer

Yes. Wear safety glasses to protect your eyes from metal fragments, and gloves if desired. Store in a dry, clean area to prevent corrosion. Keep out of reach of children and in a controlled environment to maintain performance.

Question 7

Can I use these screws with both metal studs and wooden frames?

Accepted Answer

Yes. They are designed for drywall applications with light metal and wood framing. The self-tapping design helps create a secure hold in both materials when used correctly.

Question 8

If I’m choosing between 3.5x25mm, 3.5x35mm, and 3.5x50mm screws, how do I decide?

Accepted Answer

3.5x25mm is good for thinner boards or close-to-surface fastening; 3.5x35mm is a balanced choice for typical drywall installations; 3.5x50mm is better for thicker assemblies or when fastening into deeper studs. Match the length to the board thickness and the stud depth to avoid protruding or tearing the drywall.

Question 9

Why is a Phillips drive head used on these screws?

Accepted Answer

The Phillips drive reduces cam-out and helps you achieve a precise, flush install, which is important for a smooth drywall finish and reliable hold.

Question 10

What tips help ensure a strong and durable hold when using these screws?

Accepted Answer

Use the correct driver in good condition, drive screws straight and to a consistent depth (flush to the board surface without overdriving), consider pilot holes for hardwood frames, and avoid overtightening to prevent drywall damage.

Question 11

How do these Knauf drywall screws compare to other drywall screws on Fepy, like 3.5x25mm or 3.5x50mm variants?

Accepted Answer

The 3.5x35mm Knauf Drywall Screw TN offers a middle-ground length for standard drywall thicknesses, balancing holding power and ease of installation. For shorter thicknesses, the 3.5x25mm variant is more appropriate, while the 3.5x50mm variant is better for deeper studs or thicker assemblies. See the alternatives: https://fepy.com/product/knauf-drywall-screw-3-5x25mm-tn and https://fepy.com/product/knauf-drywall-screw-3-5x50mm-tn

Question 12

Is this a good value for money given the box size and performance?

Accepted Answer

Yes. The 1000-piece box provides bulk value for typical drywall projects, with a durable, heat-treated carbon steel composition and a design optimized for efficient tapping and secure holds on drywall installations.

Knauf 3.5 x 35mm Drywall Screw TN (1000pcs)

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