These DIN 961 Fine Thread Hex Set Screws are manufactured from Class 8.8 steel and feature a zinc-plated, blue passivated A2K finish for added corrosion protection.

Unlike standard coarse-thread metric fasteners, DIN 961 uses a fine metric thread, providing a smaller thread pitch for applications where a fine-thread fastener is specifically required. The fully threaded design extends the thread up to the hexagon head, providing thread engagement along the available length of the fastener.

The external hex head allows straightforward installation using standard spanners and sockets, while the Class 8.8 strength rating makes these fasteners suitable for automotive, motorsport, machinery, fabrication, engineering, maintenance and general workshop applications.

Fine-thread fasteners are commonly used where the original assembly or component specifies a particular metric fine thread. Always confirm the required diameter and thread pitch before installation, as fine and standard coarse metric threads of the same nominal diameter are not interchangeable.

Available in a range of metric fine-thread sizes and sold individually, so you can buy exactly what you need without purchasing a full box.

Key Features

• DIN 961 specification
• Metric fine thread
• Fully threaded / thread to head
• Class 8.8 steel
• Hexagon head
• External hex drive
• Zinc-plated
• Blue passivated A2K finish
• Suitable for automotive, motorsport, fabrication and engineering
• Multiple metric fine-thread sizes available
• Sold individually
• No minimum order quantity