MIL-DTL-81381/20 wire-light weight-high strength conductor
These wires have one layer of FEP/polyimide/FEP tape insulation with a polyimide hard coat for increased cut-through and abrasion resistance and a high-strength copper alloy conductor for greater break strength.
　

Specifications

Voltage rating - volts 600 　 Temperature rating °C -55 to 200 　 Insulation FEP/polyimide/FEP tape with modified aromatic polyimide coating. 　 Conductor Nickel-Plated High-Strength Copper Alloy 　 Conductor Size (AWG) 28 　 Conductor Dia. Minimum - inches (mm) .014 (.36) 　 Conductor Dia. Maximum - inches (mm) .016 (.41) 　 Stranding 7/36 　 Insulation Diameter Minimum - inches (mm) .024 (.61) 　 Insulation Diameter Maximum - inches (mm) .027 (.69) 　 Weight - pounds/1000 feet (Kg/1000m) .9 (1.3) 　 Maximum Resistance Ohm/1,000 feet (ohm/Km), @ 20°C 79.0 (259.12)

Item # Conductor Size (AWG) Conductor Dia. Minimum - inches (mm) Conductor Dia. Maximum - inches (mm) Stranding Insulation Diameter Minimum - inches (mm) Insulation Diameter Maximum - inches (mm) Maximum Resistance Ohm/1,000 feet (ohm/Km), @ 20°C M81381/20-20 20 .037 (.94) .040 (1.02) 19/32 .047 (1.19) .050 (1.27) 11.4 (37.39) M81381/20-22 22 .029 (.74) .031 (.79) 19/34 .039 (.99) .042 (1.07) 18.6 (61.01) M81381/20-24 24 .023 (.58) .025 (.64) 19/36 .032 (.81) .035 (.89) 30.1 (98.73) M81381/20-26 26 .018 (.46) .020 (.51) 19/38 .028 (.71) .030 (.76) 49.4 (162.03) M81381/20-28 28 .014 (.36) .016 (.41) 7/36 .024 (.61) .027 (.69) 79.0 (259.12) M81381/20-30 30 .011 (.28) .013 (.33) 7/38 .021 (.53) .024 (.61) 126.6 (415.25)