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MIL-L-22624A
3.4.6 Pitch distance.  Pitch distance shall be defined as
shown In Figure 1.  The pitch distance for the Mark 6 Mod 4
link shall be 1.601 inches plus or minus 0.024 inch.
3.4.7 Belt strength.  When tested as specified in 4.6.1.9,
the ammunition belt formed by the links shall not separate.
The increase in average pitch distance of the links shall
not exceed 0.010 inch.
3.4.8 Belt flexibility.
3.4.8.1 Twist.  The belt formed by the links shall be
capable of being twisted 360 degrees in not more than 13
links.
3.4.8.2 Fanning. projectile end out.  Belted links, loaded
with dummy ammunition rounds (see 3.7), shall be fanned in
a circular pattern with the flanged ends of the carriers
touching.  The diameter of the circle, measured across the
tips of the projectiles, shall be not more than 40.0 inches.
3.4.8.3 Fanning. case end out.  Twenty-five belted links,
loaded with dummy ammunition rounds. shall be fanned in a
circular pattern-on a smooth surface with the projectile
ends of the rounds pointing Inward.  The loop formed shall
not exceed 20 inches overall (flanged end to flanged end).
3.4.8.4 Stacking.  There shall be sufficient flexibility
in roll to assure feeding a loaded belt into a stacked con-
figuration and withdrawing the belt from that configuration.
Roll is defined as belt flexibility about the longitudinal
centerline of the individual links.
3.5 Performance characteristics. Links formed into belts
and loaded with 20MM, Mark 100 series ammunition shall be
capable of fitting into and functioning with the Mark 4 Gun
Pod and its components (Mark 11 Gun Mechanism and Mark 2
Loader).  See 3.7 and 3.8.
3.5.1 Belt feeding.  Belted links shall be capable of
being withdrawn from the gun pod magazine or from stowage
containers at the prescribed rate of fire of the gun.  The
belted links shall pass through feed chutes without catch-
ing or binding.
3.5.2 Link positioning.  The belted links of 3.5.1 shall
engage the sides of the loader link guide rail and pass
between the guide rail and the loader sprockets without
catching or binding.  During the loader ramming operation,

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