Leading provider
of high-performance wire,
cable and tubing since 1959
Toll Free:(800) 822-WIRE
Local: (661) 257-2400
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

MWRD14SPN N/A 14 N/A 0.0641 in1.628 mm N/A 0.0016 in0.041 mm N/A 0.0666 in1.692 mm
MWRD15SPN N/A 15 N/A 0.0571 in1.450 mm N/A 0.0015 in0.038 mm N/A 0.0594 in1.509 mm
MWRD16SPN N/A 16 N/A 0.0508 in1.290 mm N/A 0.0014 in0.036 mm N/A 0.0531 in1.349 mm
MWRD17SPN N/A 17 N/A 0.0453 in1.151 mm N/A 0.0014 in0.036 mm N/A 0.0475 in1.207 mm
MWRD18SPN N/A 18 N/A 0.0403 in1.024 mm N/A 0.0013 in0.033 mm N/A 0.0424 in1.077 mm
MWRD19SPN N/A 19 N/A 0.0359 in0.912 mm N/A 0.0012 in0.030 mm N/A 0.0379 in0.963 mm
MWRD20SPN N/A 20 N/A 0.0320 in0.813 mm N/A 0.0012 in0.030 mm N/A 0.0339 in0.861 mm
MWRD21SPN N/A 21 N/A 0.0285 in0.724 mm N/A 0.0011 in0.028 mm N/A 0.0303 in0.770 mm
MWRD215SPN N/A 21-1/2 N/A 0.0269 in0.683 mm N/A 0.0011 in0.028 mm N/A 0.0287 in0.729 mm
MWRD22SPN N/A 22 N/A 0.0253 in0.643 mm N/A 0.0011 in0.028 mm N/A 0.0270 in0.686 mm
MWRD23SPN N/A 23 N/A 0.0226 in0.574 mm N/A 0.0010 in0.025 mm N/A 0.0243 in0.617 mm
MWRD24SPN N/A 24 N/A 0.0201 in0.511 mm N/A 0.0010 in0.025 mm N/A 0.0217 in0.551 mm
MWRD245SPN N/A 24-1/2 N/A 0.0190 in0.483 mm N/A 0.0010 in0.025 mm N/A 0.0206 in0.523 mm
MWRD25SPN N/A 25 N/A 0.0179 in0.455 mm N/A 0.0009 in0.023 mm N/A 0.0194 in0.493 mm
MWRD255SPN N/A 25-1/2 N/A 0.0169 in0.429 mm N/A 0.0009 in0.023 mm N/A 0.0184 in0.467 mm
MWRD26SPN N/A 26 N/A 0.0159 in0.404 mm N/A 0.0009 in0.023 mm N/A 0.0173 in0.439 mm
MWRD265SPN N/A 26-1/2 N/A 0.0150 in0.381 mm N/A 0.0009 in0.023 mm N/A 0.0164 in0.417 mm
MWRD27SPN N/A 27 N/A 0.0142 in0.361 mm N/A 0.0008 in0.020 mm N/A 0.0156 in0.396 mm
MWRD275SPN N/A 27-1/2 N/A 0.0134 in0.340 mm N/A 0.0008 in0.020 mm N/A 0.0148 in0.376 mm
MWRD28SPN N/A 28 N/A 0.0126 in0.320 mm N/A 0.0008 in0.020 mm N/A 0.0140 in0.356 mm
MWRD285SPN N/A 28-1/2 N/A 0.0119 in0.302 mm N/A 0.0008 in0.020 mm N/A 0.0132 in0.338 mm
MWRD29SPN N/A 29 N/A 0.0113 in0.287 mm N/A 0.0007 in0.018 mm N/A 0.0126 in0.320 mm
MWRD295SPN N/A 29-1/2 N/A 0.0106 in0.269 mm N/A 0.0007 in0.018 mm N/A 0.0119 in0.302 mm
MWRD30SPN N/A 30 N/A 0.0100 in0.254 mm N/A 0.0007 in0.018 mm N/A 0.0112 in0.284 mm
MWRD305SPN N/A 30-1/2 N/A 0.0095 in0.241 mm N/A 0.0007 in0.018 mm N/A 0.0107 in0.272 mm
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