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|  MIL-T-62299B(AT)
the delivery point; servicing of engine cooling systems with a solution
of ethylene glycol type antifreeze and water in equal parts by volume;
and servicing of windshield washer reservoir with water and appropriate
additives.
*
3.7 Workmanship. Defective components or parts and assemblies
which have been repaired or modified to overcome deficiencies shall not
be furnished. All parts shall exhibit no evidence of damage,
mutilation, or poor workmanship. Damaged components or parts that have
been subjected to rebuild or repairs shall not be used as replacement
parts or components. All mounting devices such as bolts, nuts and
rivets shall be complete and secured in accordance with the highest
standards of industry.
*
3.7.1 Metal fabrication. Metal used in the fabrication of
equipment shall be free from kinks and sharp bends. The straightening
of material shall be done by methods that will not degrade the design
strength of metal. Shearing and chipping shall be done neatly and
accurately. All bends of a major character shall be made with
controlled means in order to insure uniformity of size and shape.
*
3.7.2 Bolted connections. Bolt holes shall be accurately punched
or drilled and shall have the burrs removed. Washers or lockwashers
shall be provided in accordance with good commercial practice, and all
bolts, nuts and screws shall be tight.
*
3.7.3 Riveted connections. Rivet holes shall be accurately
punched or drilled and shall have the burrs removed. Rivets shall be
driven with pressure tools and shall completely fill the holes. Rivet
heads, when not countersunk or flattened, shall be of an approved shape
and of uniform size for the same diameter of rivet. Rivet heads shall
be full, neatly made, concentric with the rivet holes, and shall be in
full contact with the surface of the member.
*
3.7.4 Welding. Welding procedures shall be in accordance with a
nationally recognized welding code. The surface of parts to be welded
shall be free from rust, scale, paint, grease, or other foreign matter.
Welds shall be of sufficient size and shape to develop the full strength
of the parts connected by the welds. Welds shall transmit stress
without permanent deformation or failure when the parts connected by the
welds are subjected to proof and service loadings.
*
3.7.5 Paneling installation. All interior paneling shall be
installed uniformly, free of misalinement, open seams, gaps, and uneven
surfaces. Interior paneling shall be properly secured, free of
misalined joiners, edgings, waviness, dents, nicks, scratches, sharp
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