Happy Holidays! Orders placed after 1:00PM EST on Tuesday, 12/23/2025, will be shipped on Friday, 12/26/2025.
  1. categories
  2.  > other
  3.  > magnet wire
 Magnet Wire 42ga (1280ft)
 Magnet Wire 42ga (1280ft)  --thumbnail-1 Magnet Wire 42ga (1280ft)  --thumbnail-2
In Stock
$13.80
-
+

Same Day Shipping

Learn about eligibility

Order within: 00:00 for shipment on Tues, Nov 2nd

Secure Online Checkout

Encryption through Authorize.net

Magnet Wire 42ga (1280ft) MW42-4

MW42-4 Specifications

  • Weight: This is the weight of a single magnet in ounces and grams.
    4.4 oz (124.74 g)
  • Color: The color of the coating or plating on the product.
    Copper
  • Length:
    1280 feet
  • Enamel Insulation:
    Polyurethane / Polyamide (Nylon)
  • Wire Gauge:
    42 gauge
  • Wire Diameter:
    0.003 in (0.076mm)
  • Temperature Range:
    -22ºF (-30ºC) to 311ºF (155ºC)
  • Solderable:
    680°F (360°C)
  • Specs:
    MIL JW-1177/42, MW 80-C, Class 155
  • Compliance:
    RoHS Compliant

Magnet wire is copper wire coated with a very thin layer of insulation (it is not a magnet). It is used for various applications but is mostly used for constructing windings in transformers, inductors, motors, speakers, electromagnets, and much more! This is also available in a 1/2 lb spool, MW42-8.

NOTE: This wire gauge is very, very thin. It is thinner than wire than you might be used to working with. It's not much bigger in diameter than a human hair! This kind of wire is more often found in windings that require a great many turns of wire, such as the electric pickups on an electric guitar.

MW42-4 Spec & Certificate Downloads

Similar Products

Recently Viewed Products

  • bz084-neodymium-block-magnet
    3 x 1/2 x 1/4 Inch Neodymium Rare Earth Bar Magnet N42 BZ084
    32.58 Magnet pull force case 1 Magnetization direction icon
  • dc1-n52-neodymium-disc-magnet
    3/4 x 1/16 Inch Neodymium Rare Earth Disc Magnet N52 DC1-N52
    6.13 Magnet pull force case 1 Magnetization direction icon
  • mm-b-36-neodymium-counterbored-mounting-magnet
    1.417 x 0.315 Inch Neodymium Rare Earth Counterbored Pot Magnet N38 MM-B-36
    59.5 Magnet pull force case 1 Magnetization direction icon
  • dh13-neodymium-cylinder-magnet
    1/10 x 3/16 Inch Neodymium Rare Earth Cylinder/Rod Magnet N42 DH13
    0.52 Magnet pull force case 1 Magnetization direction icon
  • dx04b-n52-neodymium-disc-magnet
    1 x 1/4 Inch Neodymium Rare Earth Disc Magnet N52 DX04B-N52
    33.68 Magnet pull force case 1 Magnetization direction icon
  • rx033cs-p-n52-neodymium-countersunk-ring-magnet
    1 x 0.221 x 3/16 Inch Neodymium Rare Earth Countersunk Ring Magnet N52 RX033CS-P-N52
    24.61 Magnet pull force case 1 Magnetization direction icon
  • b866-neodymium-block-magnet
    1/2 x 3/8 x 3/8 Inch Neodymium Rare Earth Block Magnet N42 B866
    12.93 Magnet pull force case 1 Magnetization direction icon
  • mm-a-60-neodymium-countersunk-mounting-magnet
    2.362 x 0.591 Inch Neodymium Rare Earth Countersunk Pot Magnet N38 MM-A-60
    245 Magnet pull force case 1 Magnetization direction icon
  • tt-9-magnetic-pickup-tool
    Telescoping Magnet Pickup Tool N42 TT-9
  • d88-neodymium-cylinder-magnet
    1/2 x 1/2 Inch Neodymium Rare Earth Cylinder/Rod Magnet N42 D88
    14.6 Magnet pull force case 1 Magnetization direction icon
  • mw30-4-magnet-wire
    Magnet Wire 30ga (800ft) MW30-4
  • rx033cs-n-neodymium-countersunk-ring-magnet
    1 x 0.221 x 3/16 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 RX033CS-N
    20.51 Magnet pull force case 1 Magnetization direction icon
  • bx8c1-neodymium-block-magnet
    1 1/2 x 3/4 x 1/16 Inch Neodymium Rare Earth Bar Magnet N42 BX8C1
    7.11 Magnet pull force case 1 Magnetization direction icon
  • bx0c8-n52-neodymium-block-magnet
    1 x 3/4 x 1/2 Inch Neodymium Rare Earth Block Magnet N52 BX0C8-N52
    52.78 Magnet pull force case 1 Magnetization direction icon
  • dd8-neodymium-disc-magnet
    13/16 x 1/2 Inch Neodymium Rare Earth Disc Magnet N42 DD8
    32.05 Magnet pull force case 1 Magnetization direction icon
  • bx081ad-p-neodymium-adhesive-backed-block-magnet
    1 x 1/2 x 1/16 Inch Neodymium Rare Earth 3M Adhesive Backed Block Craft Magnet N42 BX081AD-P
    5.16 Magnet pull force case 1 Magnetization direction icon
  • r824-neodymium-ring-magnet
    1/2 x 1/8 x 1/4 Inch Neodymium Rare Earth Ring Magnet N42 R824
    10.37 Magnet pull force case 1 Magnetization direction icon
  • b864-neodymium-block-magnet
    1/2 x 3/8 x 1/4 Inch Neodymium Rare Earth Block Magnet N42 B864
    10.51 Magnet pull force case 1 Magnetization direction icon
  • d93-neodymium-disc-magnet
    9/16 x 3/16 Inch Neodymium Rare Earth Disc Magnet N42 D93
    10.94 Magnet pull force case 1 Magnetization direction icon
  • deh2-neodymium-disc-magnet
    7/8 x 2/10 Inch Neodymium Rare Earth Disc Magnet N42 DEH2
    20.24 Magnet pull force case 1 Magnetization direction icon
  • 43am06-custom-neodymium-magnet
    Custom Neodymium Magnet 43AM06
  • xmas1-neodymium-assorted-magnetic-thumbtacks
    Neodymium Rare Earth Assorted Color Magnetic Thumbtacks N42 XMAS1
    Magnetization direction icon
  • d56-neodymium-cylinder-magnet
    5/16 x 3/8 Inch Neodymium Rare Earth Cylinder/Rod Magnet N42 D56
    5.76 Magnet pull force case 1 Magnetization direction icon
  • 48dm00-custom-neodymium-magnet
    Custom Neodymium Magnet 48DM00
  • dfh2-neodymium-disc-magnet
    15/16 x 2/10 Inch Neodymium Rare Earth Disc Magnet N42 DFH2
    21.83 Magnet pull force case 1 Magnetization direction icon
  • mv43-magnetic-viewing-film
    Magnetic Viewing Film MV43
  • Our Services

    Free Magnet Calculators
    Quantity Discounts
    Huge Inventory
    Expert Advice
    Fast Shipping
    Quality Commitment
    Magnet Specifications
    Magnet Info Blog