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MIL-M-45664E(MU)
F11732148
Gage, Interchangeability, Maximum
F11732149
Gage, Interchangeability, Minimum
E11727490
Mount, Periscope: M118E1
PACKAGING DATA SHEET
PS8619450
Packaging of Mount, Periscope: M118
PS11727490
Packaging of Mount, Periscope: M118E1
(Copies of specifications, standards, drawings, and packaging data sheets
required by suppliers in connection with specific procurement functions
should be obtained from the procuring activity or as directed by the con-
tracting officer.)
3.
REQUIREMENTS.
3.1 Fabrication.- The mount shall be manufactured in accordance with
Drawing F8619450 (M118), or E11727490 (M118E1), and drawings pertaining
thereto.
3.2 General sPecification.- The contractor shall be responsible for
adherence to, and compliance with, the following requirements of MIL-F-
13926:
(a)
Order of precedence.
(b)
Dimensions and tolerances.
(c)
Inorganic protective surface finishes.
(d)
Part identification and marking.
(e)
Workmanship.
3.2.1 Interchangeability. - The mount shall be capable of permitting
insertion of the gages specified in 4.6.7. After insertion, the gages
shall be capable of being firmly secured and subsequently removed.
3.3 Environmental.
3.3.1 Operating temperatures.- The mount shall meet the applicable
requirements of 3.5.1 to 3.5.4.2 inclusive while exposed to and thermally
stabilized at ambient temperatures of -40 and +150F.
3.3.2 Vibration.- The mount shall be vibrated at a constant frequency
of 30 cycles per second with an amplitude of 1/16 inch (1/8 inch maximum
excursion) for a period of 5 1/4 minutes. Subsequent to vibration, there
shall be no evidence of physical failure and the mount shall meet the foll-
owing requirements of this specification (see 3.5.4.2).
3.4 Orientation.- The locating surface of the mounting flange of the
mount shall be secured in a horizontal plane and the headrest assemblies
shall be in their uppermost vertical position. Gages referenced in 3.2.1
shall be utilized to determine compliance with the requirements of 3.5.1
and 3.5.2.
2

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