MIL-PRF-46147D
(Application for copies should be addressed to SAE International, 400 Commonwealth
Drive, Warrendale, PA 15096-0001, or at www.sae.org)
2.4 Order of precedence. In the event of a conflict between the text of this document and
the references cited herein, except the text of this document takes precedence. Nothing in this
document, however, supersedes applicable laws and regulations unless a specific exemption has
been obtained.
3. REQUIREMENTS
3.1 Qualification. The lubricants furnished under this specification shall be products
which are authorized by the qualifying activity for listing on the applicable qualified products list
before contract award (see 4.1.1 and 6.3).
3.2 Materials. Unless otherwise specified, the material selection is the prerogative of the
contractor as long as all articles submitted to the Government fully meet the operating, interface,
support and ownership, and environmental requirements specified.
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled,
recovered, or environmentally preferable materials should be used to the maximum extent
possible provided that the material meets or exceeds the operational and maintenance
requirements, and promotes economically advantageous life cycle costs.
3.3 Operating requirements.
3.3.1 Endurance life. Type I lubricants shall have an average Falex endurance life of not
less than 120 minutes under a gage load of 4480 newtons (N) (1000 pounds force (lbf)). Type II
lubricants shall have an average Falex endurance life of not less than 90 minutes under a gage
load of 4480 N (1000 lbf) (see 4.3.3.1).
3.3.2 Load-carrying capacity. The lubricants shall have an average Falex load-carrying
capacity of not less than 11 200 N (2500 lbf) with no single test result less than 8950 N
(2000 lbf) (see 4.3.3.2).
3.4 Interface requirements.
3.4.1 Film adhesion. The bonded lubricant shall adhere to applicable metal surfaces. No
bare metal surface shall be exposed on test panels (see 4.3.4.1).
3.4.2 Film appearance and thickness. The bonded lubricant shall appear uniform in color
and shall be smooth, free from any cracks, sags, foreign matter, grit, rough particles, or
separation of ingredients. The coating thickness of the cured film shall be between
0.008 millimeters (mm) and 0.013 mm with no single reading less than 0.005 mm or greater than
0.018 mm (see table II and 4.3.4.2).
3.4.3 Spray pattern and duration (lubricants in gas-pressurized containers only). The
spray pattern shall be not less than 38 mm wide and shall be uniform in color, smooth, and free
from bubbles. The spray shall be effective for not less than 290 seconds (see 4.3.4.3).
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