MIL-DTL-55041F
NATIONAL CONFERENCE OF STANDARDS LABORATORIES (NCSL)
NCSL-Z540.3
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Calibration Laboratories and Measuring and Test Equipment.
(Copies of the above document are available online at https://www.ncsli.org or from National Conference of
Standards Laboratories (NCSL), 2995 Wilderness Place Suite 107, Boulder, CO 80301-5404, United States).
SAE INTERNATIONAL (SAE) AEROSPACE MATERIALS SPECIFICATIONS (AMS)
SAE-AMS-QQ-A-200
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Aluminum Alloy, Bar, Rod, Shapes, Structural Shapes, Tube, and Wire,
Extruded; General Specification for.
SAE-AMS-QQ-S-763
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Steel Bars, Wire, Shapes, and Forgings; Corrosion Resistant.
SAE-AS50151
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Connectors, Electrical, Circular Threaded, An Type, General Specification For
(Copies of these documents are available online at https://www.sae.org or from SAE World Headquarters, 400
Commonwealth Drive, Warrendale, PA 15096-0001).
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the
text of this document and the references cited herein (except for related specification sheets), 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 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the
applicable specification sheets. In the event of any conflict between requirements of this specification and the
specification sheets (MIL-DTL-55041/10 and MIL-DTL-55041/11), the latter shall govern (see 6.2).
3.2 Material. The material for each part shall be as specified herein; however, when a definite material is not
specified, a material shall be used which will enable the waveguide switches to meet the performance requirements
of this specification. Acceptance or approval of any constituent material shall not be construed as a guaranty of the
acceptance of the finished product. The material shall be selected from the following:
a.
Aluminum alloy plates and sheets shall conform to composition 6061 of ASTM-B209; extruded aluminum
alloy shall conform to composition 6063 of ASTM-B221 (non-aerospace applications) and SAE-AMS-QQ-A-
200 (aerospace and unspecified applications) or composition 6061 of ASTM-B209.
b.
Corrosion-resisting steel plates, sheets, and strips shall conform to ASTM-A666 (cold-worked grades),
ASTM-A693 (precipitation-hardening grades) or ASTM-A240/A240M (all other grades).
c.
Corrosion-resisting forgings shall conform to SAE-AMS-QQ-S-763 and corrosion-resisting steel pipe shall
conform to MIL-P-24691/3.
d.
Copper alloy sheet shall conform to ASTM-B36/B36M and ASTM-B121/B121M.
e.
Aluminum alloy castings shall conform to alloy A360 of ASTM-B85/B85M, class 8 alloy 356 of ASTM-
B108/B108M, or alloy 40E of ASTM-B26/B26M.
3.2.1 Dissimilar metals. Unless suitably protected against electrolytic corrosion, dissimilar metals shall be as
specified in MIL-STD-889.
3.2.2 Fungus. Materials used in the construction of switches shall be fungus inert (see 6.4.12).
3.2.3 Pure tin. The use of pure tin as an underplate or final finish is prohibited both internally and externally. Tin
content of the waveguide switch components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed
with a minimum of 3 percent lead, by mass (see 6.7).
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