MIL-DTL-24643/21F
TABLE I. Details.
Overall diameter
Numbers of
Diameter over
Diameter
Military part no.
strands and strand
insulation min. avg.
over covering
Type and size
M24643/21
min.
max.
diameter (inch)
(inch)
max. (inch)
(inch)
(inch)
-01UN
LSTCJU-4
7/0.025
0.105
0.140
0.400
0.430
-02UN
LSTCTU-4
7/0.025
0.105
0.140
0.400
0.430
REQUIREMENTS:
Qualification required.
INSPECTIONS:
Basic Electricals:
Voltage withstand (volts, root mean square, min.)
Conductor to conductor
3000
Insulation resistance (megohms/1000 feet, min.)
Conductor to conductor
500
ANSI MC96.1 calibration limits of error
Type LSTCJU
±2.2 °C
Type LSTCTU
±1 °C
Conductor continuity
No failure
Group A:
Visual and dimensional
No failure
Abrasion resistance, extruded insulation only (scrapes min.)
250
Watertightness (see MIL-DTL-24643 for limits of water leakage)
No failure
Crack resistance, extruded insulation only
No damage
Group B:
Cold bending cable
No failure
Thermoset proof test (percent, max.)
Insulation
50
Jacket (when tested at 200 °C)
50
Drip (95±1 °C)
Zero
Physicals (unaged)
Insulation (extruded)
Tensile strength (lb/in2, min.)
700
2
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