How to choose such a regular?

Question

Regular Expressions

Hello. There is a text:

HELICOPTER BATTERY RU 33008 24PCS 4 IN PLASTIC BOX 281012CM

What should be the regular season to pull out 33008?
Naturally, text options are always random, like 33008.

Answer 1

probably like this
/\s(\d+)\s/

Answer 2

/\s\d{0,5}\s/