Summary for mil-std-171 5.3.1.2 Discussion
MIL-STD-171 5.3.1.2 is discussed as a finish designation in the military coating standard, and the thread shows some confusion about whether the question refers to a paragraph or a table entry. Marie M. explains that in Revision E, paragraph 5.3.1.2 deals with Chemical Agent Resistant Coatings (CARC), while noting there is no 5.3.2.2 in that revision; she suggests the asker may be looking at an earlier revision. William Dewberry adds that MIL-STD-171 is the standard for coating bare metals for the Department of Defense, and Dennis Johnson says 5.3.1.1, 5.3.1.2, and 5.3.1.3 are heavy manganese phosphate coating designations. Ted Mooney clarifies that the relevant references are finish numbers 5.3.1.2 and 5.3.1.3 in Table V, not a section heading. The thread also includes a later question about the difference between the 2 and 3 designations.
Q. I do the purchasing and quoting for a small job shop and am trying to find out what 5.3.1.2. or 5.3.2.2 of MIL 171 is. I would greatly appreciate any help.
Greg T [surname deleted for privacy by Editor]
Job Shop – Houston, Texas
2004
A. Greg, you can find Military Specifications on the web pretty easily- currently https://assist.daps.dla.mil/quicksearch/ works, but if the DoD changes it just type in “Military Specification” in Google, and you’ll get there. Anyway, in Revision E, paragraph 5.3.1.2 deals with Chemical Agent Resistant Coatings (CARC), and there is no 5.3.2.2. Perhaps your request refers to an earlier revision of Mil-Std-171.
Lee Gearhart
metallurgist – E. Aurora, New York
2004
Ed. note: The Assist site has moved many times over the years, so we are now using active macros to link directly to the specs in question, as below …
A. MIL 171 E concerns Phosphate finishes for iron & low alloy steels.
5.3.1.2. is Phosphate Type M per DOD-P-16232 [ed. note: replaced by MIL-DTL-16232 [from
DLA]
].
Class 2, is with a supplementary treatment with lubricating oil conforming to MIL-L-3150 [ed. note: superceded by MIL-PRF-3150 [from
DLA]], and 5.3.2.2. is Phosphate Type Z per DOD-P-16232 Class 2 with preservative conforming to MIL-PRF-16173 [⇦ this spec on DLA, grade 3 or MIL-L-3150 (as alternate for very small parts) Hope this helps.
Marie M [surname deleted for privacy by Editor]
– Santa Fe Springs, California, USA
2004
A. Marie M’s answer is the correct one! Mil STD 171 is the standard for industry to coat bare metals to a certain specification for the Department of Defense. MIL-STD-193 is the standard for CARC.
William Dewberry
US ARMY RESEARCH AND DEVELOPMENT LAB – Picatinny Arsenal New Jersey
April 3, 2008
A. 5.3.1.1, 5.3.1.2 and 5.3.1.3 are all heavy manganese phosphate coating designations found in MIL-STD-171
Dennis Johnson
– Marion, Iowa, USA
July 27, 2010
A. Sorry, I was lost as Lee was, because this spec has a section 5.3.1.2, but that’s not not what you are talking about . . . you are talking about finish number 5.3.1.2 and 5.3.1.3, from Table V
Although phosphated parts that are not oiled usually get painted, I don’t see this specification demanding that they be painted.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
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November 3, 2010
Q. I am working on a dwg. and need help, it calls out the following spec, I will type exactly as I see it called out.
Protective Finish:
Finish 3.3.1.3 OR 5.3.2.3
Plus 30.7 TYPE 111 OF MIL-STD-171, .0002-.0003 THICK
CAN YOU PLEASE HELP?
Thank you,
Daniel White
– Appleton, Wisconsin
2007
Q. WHAT IS THE DIFFERENCE IN THE 2 VS 3 IN 5.3.1.2 MIL-STD-171 AND 5.3.1.3
Thinking difference is .2 for oiling parts and .3 for not oiled parts to be painted?
Matt DuVall
– Bloomington, Minnesota, USA
November 2, 2010