Hi Buddy,
It is mandatory provided:
I) If you are withdrawing less than Rs. 30,000, there is no TDS, hence no need for Form 15G/H.
II) If you are withdrawing more than Rs. 30,000 and have been a member of PF for less than 5 years, then you have to submit Form 15G/H along with PAN to avoid TDS.
III) If you are withdrawing more than Rs. 30,000 and have been a member of PF for more than 5 years, then there is no TDS, hence no need for Form 15G/H.
With Regards,
Mr. Thumbs UP