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|  MIL-R-23016(Wep)
Socket-Head Set Screws:
3.1.27.3
Set screws of size No. 6 and larger shall be of the hardened
socket-head type conforming to Standard AN565. One set screw
may be used on flatted shaft. Two set screws at 90 to 120
displacement shall be used when the shaft is not flatted. If
practicable, all set screws of the same size used in the equip-
ment shall have one type of head. Cone-point set screws shall
not be used, except when the opposing metal haS been properly
countersunk to receive the cone point.
Self-tapping and Sheet-metal Screws:
3.1.27.4
Self-tapping and sheet-metal screws may be used only when no
other suitable means exist.
Sheet Spring Nuts:
3.1.27.5
Sheet spring nuts shall be used only when specifically authorized
by the procuring activity.
3.1.28
Tools (Special):
The design of the equipment shall be such that the need for
special tools for timingj adjusting, and servicing shall be
kept to a minimum. Special tools shall be designed to with-
stand the intended use throughout the life of the equipment and
shall be subject to the approval of the procuring activity.
Those required for operational adjustments shall be securely
mounted within the equipment in a readily accessible location.
3.1.28.1
Set-Screw Wrenches:
One wrench for each size and type set-screw head employed for
operational adjustments shall be securely mounted within the
equipment in a readily accessible location.
3.1.29
Toxic and Corrosive Fumes:
The materials, as installed in the equipment under the service
conditions specified herein, shall not liberate gases which
combine with the atmosphere to form an acid or corrosive
alkali, nor shall they liberate toxic or corrosive fumes which
would be detrimental to the performance of the equipment or
health of the occupants in the aircraft.
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