Chipboard Screw TX20 4.2x42mm Electrogalvanized 500pcs Fast 285138

Description

A professional chipboard screw in the dimension 4.2 x 42 mm, specially developed for effective fastening of chipboard, floorboard, OSB and plywood to wooden joists indoors. The screw provides a strong pull against the substrate and ensures a quick and reliable installation without unnecessary material wear. Under the conical head are integrated cutting grooves (milling grooves) that actively cut down the wood fibers when tightening, which means that the head sinks perfectly smooth into the surface of the board without cracking the material or leaving protruding edges - ideal for subsequent filling, wallpapering or flooring.

To make the work easier, the screw is equipped with a distinctive TX20 (Torx) bit groove that prevents the bit from slipping (cam-out), which guarantees maximum power transmission, reduces tool wear and makes series assembly more efficient for larger construction projects. With its electro-galvanized (FZB) surface treatment, it is particularly suitable for dry indoor environments in corrosivity class C1. It is delivered in a practical large pack of 500 pieces, making it both a reliable and economical choice for professional craftsmen and meticulous home carpenters.

Features and benefits

• Smooth countersink: Milling grooves under the head countersink the screw flat into the chipboard without pre-drilling.
• Secure grip: The TX20 grip provides maximum torque without de-snagging.
• Sharp tip and sharp thread: Grips the wood immediately and reduces the risk of cracking.
• Economical bulk pack: 500 screws per box provide good economy in both small and large construction projects.

Recommended use & installation

• Preparation: Check that the framework is flat and dry.
• Tool: Use a screwdriver with fresh, high-quality TX20 bits for optimal fit.
• Installation: Screw perpendicular to the board until the head is completely flush with the surface. Thanks to the milling grooves, pre-drilling is usually not necessary in standard chipboard.

Specifications

• Dimensions (D x L): 4.2 x 42 mm
• Bit holder: TX20 (Torx)
• Head shape: Countersunk head with milling grooves
• Threading: Partially threaded / Wood thread adapted for board material
• Surface treatment: Electrogalvanized (FZB)
• Area of use: Indoors (Environmental class C1)
• Substrate: Wooden joists / Wooden joists
• Quantity in package: 500 pcs