Starrett Steel Automatic Center Punch with Adjustable Stroke – 5-inch Length, 9/16-inch Diameter, Knurled Handle

Overview

The Starrett Steel Automatic Center Punch is built to endure the demands of everyday workshop tasks. Crafted from corrosion resistant steel, it delivers reliable performance with every use. The tool weighs in as a lightweight option that still feels substantial in the hand, thanks to its knurled steel handle and thoughtful engineering. At a practical 5-inch length and a 9/16-inch punch diameter, it sits comfortably in a pocket or toolbox, ready to help you establish precise starting points for drilling or tapping projects.

Designed for simplicity, the center punch automatically strikes a blow when you apply downward pressure, reducing fatigue and keeping your other hand free for alignment. This smooth action helps create a clean, consistent indentation that guides your drill and minimizes wandering. The internal mechanism is engineered for dependable operation across a range of workshop tasks, from quick marks to more intricate setups.

Key Benefits

• Corrosion resistant steel construction resists wear in busy shop environments.
• Automatic striking action minimizes effort while maintaining consistency across strikes.
• Adjustable force via a knurled cap lets you tailor the impact for different materials.
• Spring regulated marking yields uniform depth and size for repeatable results.
• Versatile for locating holes on metals, plastics, wood, and other machinable materials.

How It Works

1. Set the desired blow force by rotating the knurled cap to the material you are working with.
2. Position the tip at the intended center point or indentation site.
3. Apply downward pressure and let the automatic mechanism strike as you press.
4. Release, inspect the mark, and proceed with drilling or further processing.
5. Reset or adjust as needed for subsequent marks on the same or different materials.

Use Case Scenarios

• Accurate hole locations on metal parts or plastic prototypes.
• Indents on wood for precise joinery or hardware placement.
• Quick preliminary marks in a machining setup to reduce misalignment risk.

Note that while the tool supports multiple materials and applications, results can vary with material hardness and surface finish. Consider starting with a lighter setting and increasing as needed to achieve a clear, consistent mark.