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-----Questions about military finishing spec. MIL-STD-171?
Q. I'm trying to find out what 1.9.2.3 of MIL-STD-171 is?
lisa Meyer- WATERBURY
May 21, 2025
A. Hi Lisa,
Sorry for the delay in posting your question, but maybe in the meanwhile you've read on down the page to where Chris Jurey gave us this:
1.9.2.3 Class 3, 0.0002 inch (5.1 um) thick "
That standard is currently at https://quicksearch.dla.mil/qsDocDetails.aspx?ident_number=35549,
and Table II on page 13 describes the finishes. Here's a screen capture:
Luck & Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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⇩ Similar, related, Q&As -- oldest first ⇩
Q. I'm trying to find out what 1.1.2.3 or 1.9.2.3 of MIL-STD-171 is?
Marvin ElliottCost estimator - Pompano, Florida
November 6, 2008
A. Go to the assist quicksearch website at http://assist.daps.dla.mil/quicksearch/ ⇩
You should find the spec there. I think the latest revision is revision E.
Aerospace - Yeovil, Somerset, UK
Ed. note: That site seems to move every year or two. The current location (May 2025) is https://quicksearch.dla.mil/, and the current version is F.
A. TABLE II. Inorganic finishes, metallic coatings.
+
1.1 Cadmium coatings
1.1.2 Plating, w-P-416, type II, with supplementary chromate treatment; normal color: not bleached or clear (see 5.1.3.3)
1.1.2.3 Class 3, 0.0002 inch (5.1 um) thick
1.9 Zinc coatings
1.9.2 Electrodeposited zinc, ASTM B633, type II with supplementary chromate treatment; normal color: not bleached or clear (see 5.1.3.3)
1.9.2.3 Class 3, 0.0002 inch (5.1 um) thick
Luke Engineering & Mfg. Co. Inc.
Wadsworth, Ohio
Q. Good morning ,
I wonder if anyone knows what protective finish 7.3.1 of MIL 171 is?
Materials are alum. alloy 5052 H32 .090 thk.
Thanks for your advise in advance!
Owner and operator - Kingston, New York, USA
January 26, 2012
A. Hi, Rebecca.
I'm not sure that I understood the question, but Finish No. 7.3.1 is "Chemical film, chromate, MIL-DTL-5541
[⇦ this spec on DLA] or ASTM B449
Type II, Class 1A, for maximum protection against corrosion, painted or unpainted".
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
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