3.3 Construction. The shapers shall be constructed of parts which are new,
and free of repairs. The structure shall withstand all
forces encountered during operation of the shaper to its maximum rating and
capacity without permanent distortion or failure.
3.3.1 Castings and forgings. All castings and forgings shall be free of
scale, and mismatching. No processes such as welding, peening,
or filling with solder or paste shall be used for reclaiming any
defective part. Such processes may be used only for enhancing surface finish
bolts, and similar parts
3.3.2 fastening devices. All screws, pins,
shall be installed in such a manner as to prevent unintentional change of
tightness. Those subject to removal or adjust shall not be swaged, peened,
welded, staked, or otherwise permanently deformed.
3.3.3 Surfaces. All surfaces shall be clean and free of harmful or
extraneous materials. All edges shall be either rounded or beveled unless
sharpness is required to perform a necessary function. Except as otherwise
the condition and finish of all surfaces shall be in
accordance with the manufacturer's commercial practice.
3.3.4 Welding. brazing. or soldering. Melding, brazing, or soldering shall
be employed only where specified in the original design. Any excess material
used for such operations shall be thoroughly removed from the part(s) upon
completion of the operations. None of these operations shall be employed as a
repair measure for defective parts.
3.3.5 Painting. Unless otherwise specified (see 6.2), the paint color and
shall be in accordance with the manufacturer's commercial
3.3.6 Threads. All threaded parts used on the shapers and their related
attachments and accessories shall conform to FED-STD-H28 and the applicable
"Detailed Standard" section referenced therein.
3.3.7 Gears. All gears shall be constructed from a material suitable for
the intended purpose. All gears shall be machined and heat treated by a
process that will impart the hardness, surface finish, and toughness that will
enable the gear train to transmit full rated torque of the drive motor without
gear damage, failure, or premature deterioration and wear.
3.3.8 Electromagnetic interference control. When specified (see 6.2),
equipment furnished under this specification shall comply with MIL-STD-461.
The equipment and subsystem(s)
class and the emission and susceptibility
requirements shall be as specified.