How to know when does the Hypertherm parts produced ?

How to know when does the Hypertherm parts produced ?

How to know when does the Hypertherm parts produced ?

This is a small interesting quesiton:

There have a 5 number on the parts.Let Show Hypertherm electrode 120926 as example.

In the below picture the 1st electrode was produced at the 4th of 50th day of  .2007

the 2nd electrode  produced at the 2nd day of 42th week.2011

the 3rd electrode  produced at 4th day of 50th week 2015

the 4th electrode  produced at 1st day of 33th week of year 2017

Anyway when does the Hypertherm parts produced is does not matter,they has same quality and cutting capacity!