MIL-DTL-1394G(AR)
Table V. ORD-SIP-S314 Revisions
Component
Defect
SIP
Revised
Classification
Classification
Cup
Lamination
Minor
Permissible
Cup
Dent
Minor
Permissible
Cup
V or U
Minor
Permissible
Cup
Stain or corrosion
Minor
Permissible
Cup
Scratch or nick
Major
Minor
Button
Dent
Minor
Major
Button
Stain or Corrosion
Minor
Permissible
Button
Scratch or nick
Minor
Major
Support Cup
Stain or corrosion
Minor
Permissible
Support Cup
V or U
Minor
Permissible
Support Cup
Flash hole missing or
Minor
Major
obstructed
Support Cup
Edge crooked or eared
Minor
Major
Primer Assembly
Inverted button
Major
Critical
Primer Assembly
Missing, misplaced, or
Minor
Major
protruding insulator
Primer Assembly
Foreign matter other
Minor
Major
than oil or grease
4.4 Method of inspection.
4.4.1 Insulation strength. The insulation strength of the cup-insulator-button assembly shall be
determined applying the specified current, voltage, and timing.
4.4.2 Electrical resistance. Each primer shall be tested for the electrical resistance limits of 3.4.
The inspection equipment shall limit the current and voltage to 1.4 milliamperes and 7.5 volts.
4.4.3 Pellet weight. The minimum total dry weight of the primer mix shall be determined by
measuring the recompressed bridge thickness of the primer. Bridge thickness is defined as the dimension
between the center of the outside face of the primer button and the disc, or between the center of the
outside face of the primer button and the exposed face of the primer support cup. The dry primer mix in
the primer assembly shall be recompressed prior to measuring the bridge thickness using force of
approximately 100 pounds in excess of the pressure required to move the cup support with respect to the
primer cup. The minimum bridge thickness dimension used to assure minimum total dry weight of the
primer mix and the recompression force shall be established by the supplier and approved by the
procuring activity.
4.4.4 Electric primer sensitivity. The method of test shall be as specified in SCATP-20. The
primer firing device shall be adjusted for a 10 microsecond discharge time from a 2 microfarad
condenser. The electrical sensitivity limit of the sample primers shall be determined using the specified
test method and procedure.
4.4.5 Electric primer time. The method of test shall be as specified in SCATP-20. The test
equipment shall be adjusted to comply with the specified current and voltage requirements.
4.4.6 Action time. The method of test shall be as specified in SCATP-20. The test sample
primers shall be assembled as Cartridge, 20MM, Target Practice, M55A2, conforming to drawing
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