The dharmacakra is one of the oldest known Buddhist symbols found in Indian art, appearing with the first surviving post-Harappan Indian iconography in the time of the Buddhist king "ASHOKA"
In Buddhism, the parts of the dharm...acakra also represent:Each spoke represents a portion of the Noble Eightfold Path including
Right meditational attainment
According to Hindu religion, Puranas mentioned that only 24 Rishis wielded the whole power of the Gayatri Mantra. These 24 rishi in Himalayas are represented through the 24 letters of Gayatri Mantra. The all the 24 spokes of Dharmachakra are representation of all these 24 rishi of Himalayas in which Vishvamitra is first and Yajnavalkya is last who governs the religion (Dharma).
24 Spokes of Dharmachakra according Hindu religion:
11. Self Sacrifice
21. Moral Values
22. Spiritual Wisdom
23. The Fear of God
24. Faith or Belief or Hope
In INDIAN FLAG, the dharmachakra of ashoka chakra is placed!! with 24spoke, each refering to the 24 letter's of "GAYATRI MANTRA"