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|  MIL-C-38418E(N)
3.19
Screw Threads - Unless otherwise specified herein, the threads of
all machine screws shall conform to MIL-S-7742.
3.20
Weight - The weight of the control assembly shall not exceed 18.56
pounds, or 18.71 pounds with the compass system controller specified in
3.8.7.
3.21
Finishes and Protective Coatings
3.21.1 Aluminum Alloy Parts - Aluminum parts shall be protected according
to MIL-E-5400.
a.
Dials, small holes, and case inserts need not be anodized.
When abrasion resistance is a factor, chemical film in
b.
accordance with MIL-C-S541 shall not be used in lieu of anodizing.
3.21.2 Ferrous Alloys - Ferrous materials
shall be protected in
accordance with MIL-STD-454, Requirement 15.
Identification of Product - Equipment, assemblies, and parts shall
3.22
be marked for identification in accordance with MIL-N-18307.
Workmanship - The control assembly, including all parts and
3.23
accessories,
shall be constructed and finished in a thoroughly
workmanlike manner. Particular attention shall be given to neatness and
thoroughness of soldering, brazing, painting, riveting, machine screw
assemblies, and freedom of parts from burrs and sharp edges.
3.23.1 Dimensions and Tolerances - Dimensions and tolerances not
specified shall be as close as is consistent with the best shop
practices.
the
affect
Where
dimensions
and
tolerances
may
interchangeability, operation, or performance of the system, they shall
be held or limited accordingly.
3.23.2 Screw Assemblies - Assembly screws and bolts shall be tight. The
word tight means that the screw or bolt cannot be appreciably tightened
further without damage or injury to the screw or bolt threads.
3.23.3 Riveting - Riveting operations shall be performed carefully to
insure that the rivets are tight and satisfactorily headed.
3.23.4 Gears - Gear assemblies shall be properly aligned and meshed and
shall operate without interference, tight spots, loose spots or other
irregularities. Where required for accuracy adjustment, gear assemblies
shall be free from backlash.
30
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