SATA ST90801 9-Piece 4mm Number Punch Set

The set includes digits 0 through 8. The 6 can be used to mark a 9 as needed, providing flexibility without requiring a separate 9 punch.

Made from high-quality steel with hardened working ends for long life, the punches have high-visibility stamped markings for quick size identification, a 4mm diameter, ergonomic grips for comfortable use, rounded edges for safety, and they ship in a compact storage case.

They’re suitable for marking metal, leather, plastic, wood, and other similar materials, making them versatile for automotive, woodworking, and crafting tasks.

Secure the workpiece, place the appropriate punch on the mark, and strike perpendicularly with a hammer. Use a bench block or rigid surface, apply steady, controlled taps, and check alignment after each mark. Test on a scrap piece first to ensure clean, uniform results.

Nine punches (numbers 0–8, with 6 doubling as 9) plus a sturdy storage case to keep things organized and protected.

Wipe them clean after use and apply a light coat of oil to prevent corrosion. Store all pieces in the included case in a dry location to maintain edge integrity and readability of the markings.

Wear eye protection, clamp or secure the workpiece, strike squarely and with controlled force, keep fingers away from the impact zone, and inspect punches for damage before use to avoid slippage or injury.

If you’re exploring options on Fepy, you can consider alternatives such as SATA ST90701 9-Piece 4mm Number Punch Set at https://fepy.com/product/sata-st90701-9-piece-4mm-number-punch-set and SATA ST90802 9-Piece 4mm Number Punch Set with Case at https://fepy.com/product/sata-st90802-9-piece-4mm-number-punch-set. Both provide similar 4mm digits with different packaging options to fit your workflow.

Common uses include labeling hardware and tools, marking inventory or parts, creating serial identifiers for automotive or woodworking projects, and adding legible numeric labels to leather, plastic, or wood components.

Yes. The 4mm size is a balance between readability and compactness for small labeling tasks. When comparing sets, consider the material hardness you’ll be stamping, the desired mark size, and whether you need a dedicated 9 or you’re fine with using 6 as 9. Also check storage, ergonomics, and durability.

Use a flat, stable surface and a bench block, align each punch precisely to the mark before tapping, apply uniform pressure with each strike, and practice on scrap material first to develop a consistent stamping rhythm.