Section 1401.601 - General(a) The authority and responsibility vested in the Secretary to contract for authorized supplies and services is delegated to Assistant Secretaries.(b) The contracting authority and responsibility delegated to Assistant Secretaries may be redelegated to heads of bureaus and offices under their supervision in accordance with 200 DM 3. Such redelegations are published in bureau chapters of the Part 200 series of the Departmental Manual.(c) Bureau heads and assistant or associate heads thereof (known as HCAs as defined in 1402.1) may redelegate contracting authority only as prescribed in 1401.603.