Countersunk timber screw, zinc-plated, TX20, 4.0×30 mm – partially threaded – pack of 1000
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Countersunk timber screw, zinc-plated, low-carbon steel. Torx TX20 drive, dimensions 4.0 x 30 mm, partially threaded. For timber joints. Pack of 1000.
Product code: 003-180
Product features
[PIM] Wkręty #80
- Material Steel
- Diameter 4
- Length [mm] 30
- Thread partial thread
- Drive TX20
- Coating Zinc plated
- Quantity per pack [pcs] 1000
- Head type countersunk
Description
Countersunk timber screw, zinc-plated, TX20, 4.0×30 mm – partially threaded – pack of 1000
The Countersunk timber screw is a fastener for timber joints, designed for installation companies and contractors who need consistent fastening in larger quantities. One shop item corresponds to a full bulk pack, making it easier to supply teams working on multiple sites.
The countersunk head sits flush with the timber surface, giving the joint a neat appearance and preventing protruding parts from interfering with further finishing work. The Torx drive guides the bit securely during installation and allows torque to be transferred without the tool slipping, reducing the risk of damage to the drive recess.
Low-carbon steel with a zinc coating provides basic corrosion protection under typical conditions of use. Zinc-plated timber screws are commonly chosen for carpentry and timber construction work where a strong, neat fastening is required.
Application and selection
Timber screws, also known as structural screws, are used to join wooden components in structures and installations. The partial thread allows the smooth section of the shank to pass freely through the component being clamped, while the thread engages in the supporting component, pulling the joined parts together.
When selecting screws for a particular joint, consider the thickness of the components being joined and the thread length so that the threaded section anchors in the supporting component. The technical drawings and tables included in the description make it easier to compare sizes across the other diameters in this range.
Benefits in everyday work
- The head sits flush with the timber surface for a neat finish
- The Torx drive reduces bit slippage during installation
- The partial thread allows the joined components to be pulled together
- The zinc coating protects the steel against corrosion under typical conditions
- The bulk pack is suitable for larger projects
The technical drawing with dimension labels shows the screw's construction: a countersunk head with Torx drive, a smooth section, a thread and a tip. The accompanying table lists dimensions for the different diameters in the range, helping you select the right size for the joint.
The second table lists the available screw lengths and corresponding thread lengths for each diameter, together with dimensional tolerances. This makes it easier to compare variants when planning an order for different joints.
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