48 CFR §236.303-1

1. (a)
   1. (4)In lieu of the limitations on the maximum number of offerors that may be selected to submit phase-two proposals at FAR 36.303-1(a)(4), for DoD—
      1. (i)If the contract value exceeds $5.5 million, the maximum number of offerors specified in the solicitation that are to be selected to submit phase-two proposals shall not exceed five, unless—
         1. (A)The solicitation is issued for an indefinite-delivery indefinite-quantity contract for design-build construction; or
         2. (B)The head of the contracting activity, delegable to a level no lower than the senior contracting official within the contracting activity, approves the contracting officer's decision with respect to an individual solicitation, that a maximum number greater than five is in the best interest of the Government and is consistent with the purposes and objectives of the two-phase selection procedures. The decision shall be documented in the contract file (10 U.S.C. 3241(d)).
      2. (ii)If the contract value is at or below $5.5 million, the maximum number of offerors specified in the solicitation that are to be selected to submit phase-two proposals is at the discretion of the contracting officer.