UU-F-1206 Folder, FileThis specification covers file folders for use in drawer and shelf files. Measurements provided herein are in the U.S. customary system i.e. inches & pounds. Offerors are encouraged to provide metric equivalent products. To facilitate the use of metric equivalent products, see Table VIII. For acceptance purposes, U.S. customary units take precedence.

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UU-F-1206C

4.4.3 Fastener Thickness. Determine the fastener thickness by measuring each extended end of the fastener prong. The measurement shall be made at the approximate midpoint of the prong, and include the coating thickness, as applicable.

4.4.4 Bending Resistance. Test the fasteners in 10 folders by inserting the prongs through one sheet of punched paper and bend the prongs back to the flat position (90 degree arc). Continue this cycle of bends 20 times taking not less than one minute to complete the 20 cycles. Second, insert the prongs through the perforations of sheets of paper having a total thickness of not less than one-half the capacity of the fasteners and bend back to their original position; repeat the cycle 50 times (Allowing at least 2-1/2 minutes). The prongs shall show no evidence of fracture at any point when tests are

complete; fracture of any prong shall be considered as failure to meet the requirements of this purchase description.

4.4.5 Corrosion Resistance. Cut the fastener from the leaf, taking care not to nick or scratch the fastener. Carefully remove any portion of the paperboard or nonwoven fabric remaining in contact with the

folder. Subject period of two (2) hours. Any visible evidence of corrosion shall be considered as failure to

meet the applicable requirements of this specification.

4.4.6 Tab Coating Test. Bend the coated tab 180° over 1/8 inch radius (the tab shall be preconditioned at

25° C (77° F) ± 4° C for 24 hours and examine for cracking, peeling, splitting, lack of adhesion, or

exposure of metal. Pare lightly with a sharp knife blade. No chipping or flaking should occur. Test the coating for indentation or removal, with a fingernail. Press surface shall be free from tackiness. Polish the surface lightly with a cloth. No fingerprints shall be visible.

4.4.7 Tab Insert Test. Type a word on the inserts. Inserts shall be folded at the score marks using finger pressure and inserted into tabs. Inserts shall remain secure in the tab when the folders are suspended sideways. The typed word shall be easily legible through the tab.

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