Starrett Steel Automatic Center Punch with Adjustable Stroke - 5-1/4 Inch Length, 11/16 Inch Punch Diameter, Knurled Handle (18C)

Overview

The Starrett 18C Automatic Center Punch blends a lightweight, knurled steel handle with a dependable 130 mm (5-1/4 inch) body and a 17 mm (11/16 inch) punch diameter. Built for real-world use, it’s designed to leave precise indentations that guide drilling and spacing in metalworking, electronics assembly, and fabrication projects. The weapon-like grip and robust construction reflect Starrett’s reputation for durable precision tools, ready to perform in busy workshops and professional settings.

Automatic mechanism and adjustable force

The tool uses an internal automatic mechanism that delivers a strike when you apply downward pressure, making one-handed operation straightforward. A knurled cap allows you to adjust the blow strength, letting you tailor the impact to different materials while maintaining control and consistency across strokes.

• Heavy-duty steel body with corrosion resistance for longer life in demanding environments.
• Automatic mechanism enables easy, repeatable marking with downward pressure.
• Adjustable force via knurled cap to suit varying material densities.
• Precision marking with a consistent strike ensures uniform depth and position for start holes or guides.
• Versatile for metal, plastics, and wood marking and hole location prep.

Precision and versatility in practice

Designed for reliability, this center punch helps you establish accurate starting points without slippage, making it a practical addition to machine shops, technicians’ benches, and DIY workstations. The 11/16 inch punch diameter provides a clear, visible indentation, while the 5-1/4 inch length keeps the tool compact enough for handheld use yet long enough to deliver a steady, confident strike.

• Lightweight yet robust for comfortable, extended use.
• Knurled handle improves grip, control, and momentum transfer during marking tasks.
• Part of Starrett’s extensive line of precision hand tools trusted by professionals.

Quality you can trust

Starrett traces its roots to 1880 and offers thousands of precision tools and measuring instruments. The 18C model combines heat-treated components with a corrosion-resistant steel body to provide dependable performance across a broad range of industries, from electronics to aerospace. While not a guarantee of outcome, its design supports repeatable, controlled marking that many professionals rely on in daily workflows.

Usage tips

To tailor the impact, rotate the knurled cap before applying pressure. For delicate materials, use a lighter setting; for tougher surfaces, increase the force. Position the tip on the intended mark spot, then apply steady downward pressure to achieve a clean indentation that guides subsequent steps.