DIN 7979D extractable dowel pins are precision-engineered parallel engineering alignment fasteners. Commonly known as pull dowels, they feature a tapped internal thread at one end to allow quick extraction via an eye bolt, puller screw, or slide hammer. These heavy-duty components are through-hardened and precision-ground to an m6 interference fit tolerance to ensure dead-accurate positioning within jigs, fixtures, press tools, and mould dies.

Key Engineering Highlights

• Zero Hydraulics: Built with a standardized air release flat along the side of the pin body. This flat bleeds out trapped pressure during installation, allowing smooth placement into blind holes without air resistance or hydraulic locking.
• Extreme Longevity: Manufactured from premium through-hardened alloy steel (such as 100Cr6 steel) hardened to a rating of 57-64 HRC. This high hardness yields severe wear resistance and prevents pin deformation under brutal shear loads.
• Simple Extraction: Simplifies maintenance schedules by eliminating the need to drill out pins or use destructive punch methods. A simple matching machine screw can pull the pin straight out without damaging adjacent workpieces