Name: Fischer 573104 Spax screw 20 mm TX 1000 pc(s)
Brand: Fischer
SKU: 3552979

Cardboard box of Fischer ClassicFast II 4.5x20 screws, labeled '1,000 x', shown on a white background.<br>

A metal screw shown side view with a star-drive head, plus a close-up of the head on the right.

Cardboard box of Fischer ClassicFast II TX20 screws, labeled 4.5x20, 1000 pieces.

Close-up of a white cabinet corner with a round silver knob and two small top holes against a beige wall.<br>

Construction worker in red hard hat and plaid shirt using a power drill to fasten plywood sheathing to a wall frame outdoors.<br>

Close-up of a metal hinge or latch on a wooden cabinet door, showing two joined steel plates secured with bolts.

Close-up of a wood screw driven horizontally into a wooden board, with the head flush at the right edge.

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Highlights & Details

Fischer 573104 Wood Screws 4.5x20mm TX20 Countersunk Zinc plated

Thread profile over 15mm length provides positive engagement for chipboard and timber, reducing pull‑out during load.
TX20 drive interface lowers cam‑out risk for faster, powered insertion and consistent torque transfer.
Countersunk head permits flush seating in workpieces, enabling neat surface finishes without protrusion.
Zinc plating offers surface protection against corrosion, extending service life in general interior carpentry environments.

Technical specifications

Product type: Spax screw

Drive: TX

Length: 20 mm

Head shape: Countersunk

Content: 1000 pc(s)

Documents & Downloads

Datasheet

Datasheet 3552979 Fischer 573104 Spax screw 20 mm TX 1000 pc(s)

User & Safety Instructions

User & Safety Instructions 3552979 Fischer 573104 Spax screw 20 mm TX 1000 pc(s)

Description

This wood screw is designed to secure timber and chipboard components by converting rotational torque into axial penetration via its threaded shank. During installation, the TX20 recess accepts a matching driver to deliver controlled torque while the screw’s thread cuts into the substrate, embedding over the specified threaded portion to create mechanical interlock. The countersunk head allows the fastener to sit level with the material surface, facilitating secondary finishing or joining of multiple layers. The plated finish reduces the risk of surface oxidation in typical indoor settings, making the fastener suitable for carpentry and joinery tasks where consistent seating and predictable holding behaviour are required.