MIL-STD-2042-2 Fiber Optic Cable Topology Installation Standard Methods For Naval Ships Equipment Part 2 Of 7 PartsThis standard provides detailed methods for the installation of fiber optic cable topology equipment see 3.16, and optical fiber cable entry to fiber optic cable topology and other equipment.

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MIL-STD-2042-2B(SH)

Step 5 - With "Y" and angle tubes, insert the stuffing tube body into the hole from the outside of enclosure (see figures 2Al-2 and 2Al-3). The excess length protruding into the enclosure may be removed.

"Y" Tube 45 degree angle

ASTM Fl836M/4

Cap

Packing assembly

Body

"0"-Ring

Clearance hole

Locknut

Enclosure wall thickness

4.5 mm max.

FIGURE 2Al-2. "Y" (45o) tube.

90 Degree angle tube

ASTM Fl836M/2

Body

Cap

Packing assembly

"0"-Ring

Locknut

Enclosure wall thickness l9 mm max.

Clearance hole

FIGURE 2Al-3. 90o angle tube.

Step 6 - Screw the locknut onto the body and tighten with a wrench against the "0"-ring sufficiently to obtain plastic to metal contact of the stuffing tube and the enclosure. In cases where this plastic to metal contact cannot be obtained, tighten the locknut until the threads

start to skip. This is considered a satisfactory indication of tightness. (Note: Hold the stuffing tube body while tightening the locknut to prevent turning.) Proceed to step 8 below.

Step 7 - With NPT tubes, screw the tube into the enclosure pipe thread and tighten it sufficiently to obtain a seal at the threads (see figure

2Al-4).

2Al-4 METH0D 2Al