MIL-DTL-83522/16C
Plug accessories: Each plug shall be packaged with a minimum of one crimp ferrule, one dust cover, and one
strain relief boot.
Protective cover: The protective cover shall consist of a lanyard which attaches to the optical fiber cable and a
cap for covering the connector (see figure 2). The protective cover shall be installable after the connector
termination process is complete. The protective cover shall be subjected only to the temperature/humidity
cycling and fungus tests. The protective cover shall not be provided with the plug connector.
Crimp sleeve: The crimp sleeve shall accept single fiber cordage with a maximum outer diameter of 2.50 mm
(.0984 inch). The plug connector shall meet all requirements when the crimp sleeve is assembled to the plug
connector using one of the following: A hex crimp die measuring 4.84 mm ± .05 mm (.190 inch ± .001 inch)
across the flats, a circular indent ring crimp die with a 2.67 mm ± .08 mm (.105 inch ± .003 inch) minor diameter
and a 3.43 mm ± .08 mm (.135 inch ± .003 inch) major diameter, or a circular indent ring crimp die with a 2.29
mm ± .08 mm (.090 inch ± .003 inch) minor diameter and a 3.05 mm ± .08 mm (.120 inch ± .003 inch) major
diameter.
Boot color: Single mode boots are to be blue, 62.5/125 micron multimode boots are to be black 100/140 micron
multimode boots are to be black.
ST connector accessories: Each ST connector shall be packaged with a minimum of one crimp sleeve, one dust
cover, and one straight boot for a 2.50 mm maximum diameter single fiber cable.
90 degree boot dimensions: ferrule end face to end of 90 degree bend: 76.2 mm (3.0 inch) max, centerline of
ferrule to cable protrusion end: 38.1 mm (1.5 inch) max, meet a cable minimum bend radius of 15 mm (0.59 inch).
VERIFICATION
Group A inspection: During group A inspections, plug dimension E shall be verified on all items. All other
dimensions may be verified on a sampled basis. Weight may be verified on a sampled basis. The qualifying
activity shall be notified of all failures during any sampled inspections.
The plug connector mates with MIL-DTL-83522/17 adapter.
Qualification by similarity: bayonet cap and/or barrel materials: Manufacturers who are qualified under this
specification sheet for a particular configuration, temperature and fiber size, and whose e ST connector with
alternate bayonet cap and/or barrel materials passes the size, weight, identification marking, workmanship,
insertion loss, tensile loading, flex life, twist, mating durability, temperature/humidity cycling, salt spray, and
flammability specified herein, are qualified under this specification sheet for the change in materials. This
qualification is valid if the only difference between the previously qualified MIL-DTL-83522/16 ST connector and
the one being tested is a change in materials. If dimensions have changed (i.e., nominal and tolerances are not
the same or tighter), the ST connector must pass shock also. Size inspection, weight, identification marking and
workmanship are to be performed on 30 ST connectors. The remainder of the testing is to be performed on the
four mated pair. Test is to be performed in the sequence listed.
Qualification by similarity- change in boot materials: Manufacturers who are qualified under this specification
sheet for a particular configuration, temperature and fiber size, and whose ST connector with alternate boot
materials passes the size, weight, identification marking, workmanship, flex life, twist, temperature cycling, salt
spray (if contains metallic parts). Fungus and flammability specified herein are qualified under this specification
sheet for the change in materials. Testing is to be performed on four mated pair and in the sequence listed.
Qualification by similarity for change in fiber size from single mode to multimode: Manufacturers who are qualified
under this specification sheet for a particular configuration, temperature and single mode fiber, and whose
62.5/1215 micron multimode ST connector passes insertion loss and shock specified herein, are qualified under
this specification sheet for 62.5/125 micron multimode and 100/140 micron multimode fiber sizes. Testing is to be
performed on four mated pair.
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