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|  MIL-T-52843C
Earthmoving and Construction Equipment Welding, AWS/ANSI D14.3,
Qualification, Section 5.
Contractors who only make horizontal welds need not qualify welders
for "all position welding." Subject to approval by the Government,
the contractor's standard welder qualification may be substituted in
lieu of the above codes provided that the contractor's procedure is
equivalent to the above codes. The contractor shall be responsible
for determining that automatic welding equipment operators are
capable of producing quality welds in accordance with AWS and ASME
codes. The certification shall be made available for review by the
contracting officer or the contracting officer's representative.
3.37.3.2 Weld quality.
a. The contractor shall be responsible for determining the
inspections needed to insure that, when the welded parts are
assembled together to make the forklift, the forklift shall
conform to the inspection requirements specified in section
4.
b. All weldments shall be free of slag, flux, weld spatter and
other impurities detrimental to either the appearance or
strength of the weldment.
c. Undercut in weldments shall be held to a minimum and shall
not be more than 1/32 inch deep.
3.37.3.3 Welding practices.
a. Preheat of materials being welded and maximum interpass
temperature during welding shall be in accordance with the
contractor's recommendations.
b. Tack welds shall be subject to the same quality requirements
as final welds.
c. Work shall be positioned for flat welding whenever
practicable.
d. Procedures and sequences shall be such that distortion and
shrinkage will be held to a minimum. When straightening is
required, caution shall be exercised to insure that the
straightening process does not weaken the part and forklift.
3.37.4 Bolted connections. Boltholes shall be accurately formed
and shall have the burrs removed. Washers, lockwashers, or other
positive locking devices shall be provided where necessary. Matching
thread areas securing bolts conforming to SAE J429 or capscrews shall
be sufficient strength to withstand the tensile strength of the bolt.
All fasteners shall be correctly torqued and shall have full thread
engagement.
3.37.5 Riveted connections. Rivets shall fill the holes
completely. The upset rivet heads shall be full, neatly made,
concentric with the rivet holes, and in full contact with the surface
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