Fischer 79780 Screw 50 mm M8 100 Pieces

Fischer 79780 screw is a 50 mm long, M8-thread fastener made of zinc-plated steel (grade 4.6) designed for fixing clamps and similar fittings in masonry with a nylon plug or directly into timber constructions. The screw features a TX (Torx) drive or an integrated hexagon head to enable secure installation in anchors or wood. Supplied in a pack of 100 pieces, this screw is intended for general fastening tasks where an M8 thread and corrosion-resistant zinc plating are required.

Advantages

The screw's steel 4.6 construction with electro zinc plating provides basic corrosion resistance while maintaining the strength required for clamp and fixture installation. The Torx drive or integrated hexagon allows easy and reliable driving into a nylon plug in brick or directly into timber, simplifying installation and reducing cam-out.

Suitable for

• Fixing clamps and brackets to masonry using a nylon plug
• Direct fastening into timber structures
• General M8 threaded connections in light construction and repair work

Key specifications

• Brand: FISCHER
• MPN: 79780
• EAN: 4006209797808
• Length: 50 mm
• Thread size: M8
• Material: Steel grade 4.6 (DIN EN ISO 898-1)
• Surface: Electro zinc-plated, min. 3 µm
• Drive: TX (Torx) or integrated hexagon
• Pack quantity: 100 pieces

How to use

Drill a correctly sized hole in the masonry or prepare a pilot hole in timber. If using masonry, insert an appropriate nylon plug into the drilled hole. Position the clamp or fitting and drive the Fischer 79780 screw through the fixture into the plug or directly into the timber using a Torx bit or hex key/socket until the fixture is secured and the head sits flush or as required.

Recommendations

Choose a nylon plug matched to the screw diameter and substrate; pre-drill to the correct depth and diameter. For exterior or corrosive environments consider alternative coatings or stainless steel variants. Do not exceed recommended torque values for M8 screws to avoid thread or material damage.