Commercial Item Description as a replacement for Federal Specification
FFF-F-311E which has been cancelled.
This commercial item description covers paper fasteners, compressor type, which are intended for use in binding papers and similar printed matter together, especially when necessary to make frequent additions or removals.
1. Salient Characteristics.
Fasteners, compressors and prongs shall be made of metal suitable for the purpose intended. Metal shall be 0.011 inch thick (+ 0.001, -0.0015inch).
The base shall be 11/32 to 5/8 inch wide and shall have at least two reinforcing ribs.
The prongs shall be 3/16 to 7/32 inch wide. The length shall be such as to provide sufficient holding strength for the capacity specified. The spacing, as specified, between the prongs shall be measured from center to center. When the prongs of the fasteners offered are separate pieces, they shall be designed for positive fastening to the base piece.
The compressor shall be 11/32 to 5/8 inch wide and designed to receive the base prongs and hold them securely so as not to allow vertical or horizontal movement of the prongs.
The center to center spacing shall have a tolerance of + 1/32 inch.
The fasteners shall have a finish in accordance with commercial practice to prevent corrosion.
Performance. The rongs shall be inserted through perforated sheets of paper having a total thickness of at least one half capacity of the fasteners. The fasteners shall be assembled with a compressor in a manner that each prong can be bent down flat to the closed position and back to the original (vertical) position 50 times with two minutes. Upon completion of this test, the prongs shall show no evidence of fracture.
Workmanship. The finished paper fastener shall exhibit no evidence of jagged or rough work. The fastener shall be free from defects which may affect serviceability, durability, and appearance.
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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