; and (iv) contracts or subcontracts for commercially available off-the-shelf fasteners, unless such fasteners are— (I) incorporated into commercially available off-the-shelf end items, subsystems, assemblies, or components; or (II) purchased as provided in subparagraph (C). (C) Inapplicability to certain fasteners This subsection does not apply to fasteners that are commercial items that are purchased under a contract or subcontract with a manufacturer of such fasteners, if the manufacturer has certified that it will purchase, during the relevant calendar year, an amount of domestically melted specialty metal, in the required form, for use in the production of such fasteners for sale to executive agencies and other customers, that is not less than 50 percent of the total amount of the specialty metal that it will purchase to carry out the production of such fasteners. (8) Exceptions for purchases of specialty metals below minimum threshold (A) In general Notwithstanding paragraph (1), the head of an executive agency may accept delivery of an item containing specialty metals that were not melted in the United States if the total amount of noncompliant specialty metals in the item does not exceed 2 percent of the total weight of specialty metals in the item. (B) Exception This paragraph does not apply to high performance magnets. (9) Streamlined compliance for commercial derivative military articles (A) In general Paragraph (1) shall not apply to an item acquired under a prime contract if the head of an executive agency determines that— (i) the item is a commercial derivative military article