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3.5X25mm 35mm C1022 Bugle Head Black Phosphated Zinc Plated Drywall Screw/Tornillos
Drywall screws are used to fix things in place inside a wall with drywall, especially where a nail would not work. These include things like lighting fixtures, outlet covers, shelves, wire and cable management systems, and anything else you would want to attach inside a wall. Drywall screws should not be used for load-bearing items like a door or a shelf that has a lot of weight on it. Drywall screws are also used for hanging items on the wall like artwork, mirrors, and TV mounts. This is when you would use a "no-drywall screw." No-drywall screws have a wide screw head and a small threaded tip. They have no sharp points and are smooth around the outside so they don't press into the drywall. These are generally easier to insert and remove without leaving a mark. Another use for no-drywall screws is when you don't want to go into the drywall when hanging something. If you have a wall without drywall or a wood or concrete wall, or you just don't want to risk damaging the drywall, you can use no-drywall screws.
The drywall screw is a screw with a sharp point designed for fixing plasterboard to metal profiles with metal thickness up to 0.7 mm. Technogips Pro offers 5 standard sizes of drywall screw:
Drywall Screw TN 3.5 x 25
Drywall Screw TN 3.5 x 35
Drywall Screw TN 3.5 x 45
Drywall Screw TN 3.5 x 55
Drywall Screw TN 4.2 x 70
We recommend using Drywall Screw TN for interior application with plasterboard type A, type H2, type DF, type DFH2 and Sound Comfort Extra type DF.
The screws are fixed with a drywall screwdriver which must be held perpendicular to the board, so that the angle between the board and the screw is 90 degrees. The screw head should penetrate 1 mm below the surface of the board, and the free end of the screw should enter at least 10 mm into the hollow space of the profile.
The different sizes of drywall screws are used as followed:
For one layer lining of plasterboard with standard thickness of 12.5mm and a metal profile up to 0.7mm, we use Drywall Screw TN 3.5 x 25.
For the second layer of a two-layer lining of plasterboard with standard thickness of 12.5mm and a metal profile up to 0.7mm we use Drywall Screw TN 3.5 x 35. When the boards have an individual thickness of 15mm, we use Drywall Screw TN 3.5 x 45 for the second layer.
For the third layer of a three-layer lining of plasterboard with standard thickness of 12.5mm or 15mm and a metal profile up to 0.7mm, we use Drywall Screw TN 3.5 x 55.
For the fourth layer of a four-layer lining of plasterboard with standard thickness of 12.5mm or 15mm and a metal profile up to 0.7mm, we use Drywall Screw TN 4.2 x 70.
| fine thread standard | head width | thread diameter | diameter | ||
| 6# | 3.5 | 7.9-8.10 | 3.40-3.60 | 13-19 | 0.5 |
| 7# | 3.9 | 7.9-8.10 | 3.70-3.90 | 25-30 | 0.8 |
| 8# | 4.2 | 7.9-8.10 | 4.0-4.30 | 25-30 | 1.2 |
| 10# | 4.8 | 8.5-9.0 | 4.70-4.90 | 55-90 | 1.5 |
| coarse head standard | 100-152 | 2.5 | |||
| 6# | 3.5 | 7.9-8.10 | 3.65-3.90 | 13-19 | 0.5 |
| 7# | 3.9 | 7.9-8.10 | 3.90-4.20 | 25-30 | 0.8 |
| 8# | 4.2 | 7.9-8.10 | 4.30-4.60 | 25-30 | 1.2 |
| 10# | 4.8 | 8.5-9.0 | 4.90-5.30 | 55-90 | 1.5 |
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