MIL-DTL-16036M(SH)
TABLE VI. Bolting of connection bars - diameter and number of bolts.
Size bars (inches)
Size
bars
1/2
5/8
3/4
1
1-1/2
2
2-1/2
3
4
5
6
8
(inches)
(inch)
(inch)
(inch)
(inch)
(inch)
(inch)
(inch)
(inch)
(inch)
(inch)
(inch)
(inch)
One
1/4
1/2
-
-
-
-
-
-
-
-
-
-
-
One
One
5/8
1/4
3/8
-
-
-
-
-
-
-
-
-
-
One
One
One
1/4
3/8
3/8
3/4
-
-
-
-
-
-
-
-
-
Two
One
One
One
1/4
3/8
3/8
1/2
1
-
-
-
-
-
-
-
-
Two
Two
One
One
One
1/4
3/8
3/8
1/2
5/8
1-1/2
-
-
-
-
-
-
-
Two
Two
Two
Two
One
One
1/4
3/8
3/8
3/8
5/8
5/8
2
-
-
-
-
-
-
Two
Two
Two
Two
Two
Two
Two
1/4
3/8
3/8
3/8
1/2
1/2
1/2
2-1/2
-
-
-
-
Two
Two
Two
Two
Two
Two
Two
Two
1/4
3/8
3/8
1/2
1/2
1/2
5/8
5/8
3
-
-
-
-
Two
Two
Two
Two
Two
Two
Two
Two
Four
1/4
3/8
3/8
1/2
5/8
5/8
5/8
5/8
5/8
4
-
-
-
Two
Two
Two
Two
Two
Two
Two
Three
Five
Five
1/4
3/8
3/8
1/2
5/8
5/8
5/8
5/8
5/8
5/8
5
-
-
Two
Two
Two
Two
Two
Two
Two
Three
Five
Five
Five
1/4
3/8
3/8
1/2
5/8
5/8
5/8
5/8
5/8
5/8
5/8
6
-
Two
Two
Two
Two
Two
Two
Two
Three
Five
Five
Five
Six
1/4
3/8
3/8
1/2
5/8
5/8
5/8
5/8
5/8
5/8
5/8
5/8
8
3.10.11.1 Tightening nuts for bus bar joints. A tightening sequence (torque and location) as described in
S9086-CJ-STM-010, NSTM Chapter 075 shall be used when multiple bolts are present. Prevailing torque self-
locking fasteners shall be torqued to 100 percent of table IV values, plus the prevailing torque that is measured when
the nut is turned on the bolt in its unloaded state. All full height nuts that are not prevailing torque self-locking
fasteners shall be torqued to 100 percent of table IV values.
3.10.12 Bus supports. A short circuit test shall be performed at maximum RMS asymmetrical short circuit
currents (see 6.2). The construction, number, spacing, and mounting of the bus bar supports shall be in accordance
with calculations based on the magnitudes of forces and stresses encountered on the buses being supported when
subjected to maximum RMS asymmetrical short circuit currents as specified (see 6.2). Values of maximum stress in
the outside fibers shall be based on the yield strength of the bus bar and not upon the tensile strength of the bus bar.
Support shall prevent contact of live parts with each other or ground during short circuit, high-impact shock, or
vibration. Any permanent deformation or displacement of the bus bars following a short circuit shall not reduce the
specified clearance distances by more than 30 percent of their original values.
34
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