Snap On Tool Box Serial Number Decoder

Write down the serial number and the "Date Code" letter immediately. Take a photo of the stamp. Text that photo to yourself. If the box is stolen, you can prove ownership when the police run that number.

This is the most common point of confusion. Snap-on has changed its stamping location over 80 years of production. Here is the cheat sheet for your search:

Vintage Decoder Example: You find H-78 stamped on a box. H = August. 78 = 1978. Your box was made in August 1978. snap on tool box serial number decoder

Once you have decoded your serial number, what next?

Snap-on started date-coding their toolboxes in 1955. Look for a two-digit number stamped on the back. Write down the serial number and the "Date

The model number tells you what the box is. It indicates the series, the width, the configuration, and sometimes the color.

The identifying tag usually contains a "K-series" number (KRA, KRL, KRSC). If the box is stolen, you can prove

Pro Tip: Use a bright flashlight and shine it at a low angle across the back of the box to find stamped numbers, as they can be very faint. The Snap-on Toolbox Serial Number Decoder Guide