The provisions of this subpart shall apply to all offerors, contractors, and subcontractors who will or do have access to classified information or a significant quantity of special nuclear material as defined in 10 CFR Part 710. In this subpart, the term "contractor" shall also mean subcontractor at any tier, the term "contract" shall also mean subcontract at any tier, and the term
"special nuclear material" shall also mean significant quantity of special nuclear material as defined in 10 CFR Part 710.