Proto J503/8 Starter Punch 3/16 Inch

Product Description

The PROTO J503/8 is a starter punch designed for driving out pins, punching starter holes, and initiating drift operations in metal fabrication and mechanical assembly work. Made from steel, it measures 3/16 inch at the punch tip with an overall length of 5.625 inches, giving technicians enough reach and control for precise starting work. The tapered tip allows accurate placement before switching to a longer drive or pin punch. Mechanics, millwrights, and field technicians working on machinery, automotive assemblies, and structural components commonly reach for this tool.

The PROTO J503/8 suits a wide range of shop and field applications where a starter punch is needed to begin pin removal or hole-starting in steel and similar materials. Its compact overall length keeps it manageable in tight working spaces, and the steel construction handles repeated hammer strikes without deforming under normal use. Suitable for professional trade shops, maintenance departments, and general mechanical service environments.

Key Features

• 3/16 inch punch tip for precise starter-hole and pin-driving work
• 5.625 inch overall length fits within the 4 to 6.9 inch length range for standard starter punches
• Steel construction withstands repeated hammer impact
• Tapered tip design allows accurate punch placement before transitioning to a drive punch
• Single-piece package quantity suits individual tool purchases and kit builds

Compatibility

Designed as a standard starter punch suitable for general mechanical, automotive, and industrial maintenance applications requiring a 3/16 inch punch tip.

Installation Notes

Use with a ball-peen or machinist hammer appropriate for the material being worked. Always wear safety glasses when striking punches, as chips and fragments can be ejected. Secure the workpiece before beginning punch operations to prevent movement. Inspect the punch tip before each use and remove from service if the tip shows mushrooming or cracking.