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  • Heavy Poly Nylon Round Magnet Wire
SPN combines the magnet wire insulation characteristics of Single Poly with the advantages of a nylon topcoat. With the nylon, SPN is still readily solderable, yet the solvent resistance and thermal stability of the insulation is excellent. In addition, the nylon provides improvement in the windability and tolerates more severe winding operations. SPN is an excellent choice for automatic winding machines.

Typical Applications

SPN has excellent solderability and the 130/155°C thermal class. It has wide use in coils and small motors. It is not recommended where severe overloads are experienced.
  • Appliance motors
  • Relays
  • Timer and clock coils
  • Encapsulated coils
  • Guitar Pickups
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Item #

AWG Size

Nom. Bare Wire Diameter

Min. Increase in Diameter Due to Film Coating

Max. Overall Diameter of Film-Coated Wire

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N/A 54 N/A 0.00062 in0.0157 mm N/A 0.00005 in0.001 mm N/A 0.00075 in0.0191 mm
N/A 52 N/A 0.00078 in0.0198 mm N/A 0.0001 in0.003 mm N/A 0.00100 in0.0254 mm
N/A 50 N/A 0.00099 in0.0251 mm N/A 0.0001 in0.003 mm N/A 0.00120 in0.0305 mm
N/A 49 N/A 0.00111 in0.0282 mm N/A 0.0001 in0.003 mm N/A 0.00130 in0.0330 mm
N/A 47 N/A 0.00140 in0.0356 mm N/A 0.0001 in0.003 mm N/A 0.00170 in0.0432 mm
N/A 46 N/A 0.00176 in0.0399 mm N/A 0.0002 in0.005 mm N/A 0.00200 in0.0508 mm
N/A 45 N/A 0.00176 in0.0447 mm N/A 0.0002 in0.005 mm N/A 0.00220 in0.0559 mm
N/A 44 N/A 0.002 in0.051 mm N/A 0.0002 in0.005 mm N/A 0.0024 in0.0610 mm
N/A 43 N/A 0.0022 in0.056 mm N/A 0.0002 in0.005 mm N/A 0.0026 in0.066 mm
N/A 42 N/A 0.0025 in0.064 mm N/A 0.0002 in0.005 mm N/A 0.0030 in0.076 mm
N/A 41 N/A 0.0028 in0.071 mm N/A 0.0002 in0.005 mm N/A 0.0033 in0.084 mm
N/A 40-1/2 N/A 0.003 in0.076 mm N/A 0.0003 in0.008 mm N/A 0.0035 in0.090 mm
N/A 40 N/A 0.0031 in0.079 mm N/A 0.0003 in0.008 mm N/A 0.0037 in0.094 mm
N/A 39-1/2 N/A 0.0033 in0.084 mm N/A 0.0003 in0.008 mm N/A 0.0039 in0.100 mm
N/A 39 N/A 0.0035 in0.089 mm N/A 0.0003 in0.008 mm N/A 0.0041 in0.104 mm
N/A 38-1/2 N/A 0.0037 in0.094 mm N/A 0.0003 in0.008 mm N/A 0.0044 in0.112 mm
N/A 38 N/A 0.004 in0.102 mm N/A 0.0003 in0.008 mm N/A 0.0047 in0.119 mm
N/A 37 N/A 0.0045 in0.114 mm N/A 0.0003 in0.008 mm N/A 0.0052 in0.132 mm
N/A 36-1/2 N/A 0.0047 in0.119 mm N/A 0.0004 in0.010 mm N/A 0.0055 in0.139 mm
N/A 36 N/A 0.0050 in0.127 mm N/A 0.0004 in0.010 mm N/A 0.0058 in0.147 mm
N/A 35-1/2 N/A 0.0053 in0.135 mm N/A 0.0004 in0.010 mm N/A 0.0061 in0.155 mm
N/A 35 N/A 0.0056 in0.142 mm N/A 0.0004 in0.010 mm N/A 0.0064 in0.163 mm
N/A 34 N/A 0.0063 in0.160 mm N/A 0.0005 in0.013 mm N/A 0.0072 in0.183 mm
N/A 33-1/2 N/A 0.0067 in0.170 mm N/A 0.0005 in0.013 mm N/A 0.0077 in0.196 mm
N/A 33 N/A 0.0071 in0.180 mm N/A 0.0005 in0.013 mm N/A 0.0081 in0.206 mm
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