3.1 Materials. -Materials shall be in accordance with applicable drawings
and specifications. Prior to producing projectile bodies from a heat of
steel, the contractor shall conduct tests in his own laboratory or other
facilities and services acceptable to the Government, to verify that the
bar stock meets the requirements of MIL-S-46070.
3.2 Parts and Assembly. -The parts and assemblies shall be in accordance with
all the requirements of Drawing (Dwg.) D7259271 and with all requirements of
the drawings and specifications shown thereon.
3.3 First Article Sample. -Unless otherwise directed by the contracting
officer, a first article sample shall be required.
3.4 Manufacturing Process.-All parts and assemblies shall be manufactured
by a process approved by the contracting officer and no deviation from that
process shall be made without his prior-approval. (see 6.2)
3.5 Banding-The rotating band blank and the rotating band seat shall be
clean and dry at the time of banding. Shot or sandblasting shall not be
used to clean the rotating band seat after knurling. The rotating band
blank shall fill the band seat.
3.6 Soundness. -Metal discontinuity in the projectile body, as determined
by eddy current inspection, shall be less than that represented by Production
Check Standard (PCS) No. 1.
3.7 Protective Coating.
3.7.1 Phosphate Coating. -The pretreatment process. used shall be in accordance
with applicable requirements of Dwg. D7259271. The phosphate coating shall be
in accordance with the requirements of TT-C-490 for appearance and minimum
weight, as applicable to the type of phosphate coating used.
3.7.2 Paint Adhesion. -The exterior paint coating shall meet the requirements
of TT-C-490 for adhesion.
3.7.3 Corrosion Resistance. -The exterior painted surface of the assembly
shall show no evidence of corrosion (red rust) after exposure to a 5%
solution of atomized salt spray for 24 hours.
3.8 Metal Parts Security. -The projectile metal parts when charged and assem-
bled as specified by Dwg. D7259275, shall not separate or break up in the
test for metal parts security.
3.9 Workmanship. -The requirements for workmanship are as specified by
applicable drawings, referenced specifications and the following: