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

  • rx033cs-p-neodymium-countersunk-ring-magnet
    1 x 0.221 x 3/16 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 RX033CS-P
    20.51 Magnet pull force case 1 Magnetization direction icon
  • stir40-magnetic-stir-bar
    0.315 x 1.575 x 1.575 Inch Magnetic Stir Bar N42H STIR40
    Magnetization direction icon
  • d42-neodymium-disc-magnet
    1/4 x 1/8 Inch Neodymium Rare Earth Disc Magnet N42 D42
    2.3 Magnet pull force case 1 Magnetization direction icon
  • r622cs-p-neodymium-countersunk-ring-magnet
    3/8 x 0.136 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 R622CS-P
    3.56 Magnet pull force case 1 Magnetization direction icon
  • dx21-neodymium-disc-magnet
    1 1/8 x 1/16 Inch Neodymium Rare Earth Disc Magnet N42 DX21
    7 Magnet pull force case 1 Magnetization direction icon
  • mt-l-mag-neato-hematite-magnetic-fidget-toys
    Magneato Hematite Magnetic Fidget Toys MT-L
  • by066-neodymium-block-magnet
    2 x 3/8 x 3/8 Inch Neodymium Rare Earth Bar Magnet N42 BY066
    36.59 Magnet pull force case 1 Magnetization direction icon
  • by0x08-n52-neodymium-block-magnet
    2 x 1 x 1/2 Inch Neodymium Rare Earth Bar Magnet N52 BY0X08-N52
    96.2 Magnet pull force case 1 Magnetization direction icon
  • b844-neodymium-block-magnet
    1/2 x 1/4 x 1/4 Inch Neodymium Rare Earth Bar Magnet N42 B844
    7.63 Magnet pull force case 1 Magnetization direction icon
  • by0x06-n52-neodymium-block-magnet
    2 x 1 x 3/8 Inch Neodymium Rare Earth Bar Magnet N52 BY0X06-N52
    76.52 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
  • rx033cs-s-neodymium-countersunk-ring-magnet
    1 x 0.221 x 3/16 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 RX033CS-S
    20.51 Magnet pull force case 1 Magnetization direction icon
  • bx8x08-neodymium-block-magnet
    1 1/2 x 1 x 1/2 Inch Neodymium Rare Earth Block Magnet N42 BX8X08
    68.36 Magnet pull force case 1 Magnetization direction icon
  • bx8x8x8-neodymium-block-magnet
    1 1/2 x 1 1/2 x 1 1/2 Inch Neodymium Rare Earth Cube Magnet N42 BX8X8X8
    192.36 Magnet pull force case 1 Magnetization direction icon
  • swp-m-sp-special-pricing-magnet
    Special Pricing Magnet SWP-M-SP
    Magnetization direction icon
  • 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
  • mm-a-16-neodymium-countersunk-mounting-magnet
    0.630 x 0.197 Inch Neodymium Rare Earth Countersunk Pot Magnet N38 MM-A-16
    11 Magnet pull force case 1 Magnetization direction icon
  • b666-neodymium-block-magnet
    3/8 x 3/8 x 3/8 Inch Neodymium Rare Earth Cube Magnet N42 B666
    10.07 Magnet pull force case 1 Magnetization direction icon
  • bx8x02-neodymium-block-magnet
    1 1/2 x 1 x 1/8 Inch Neodymium Rare Earth Block Magnet N42 BX8X02
    18.33 Magnet pull force case 1 Magnetization direction icon
  • b888pc-ora-neodymium-plastic-coated-block-magnet
    1/2 x 1/2 x 1/2 Inch Neodymium Rare Earth Plastic Coated Cube Magnet N42 B888PC-ORA
    7.01 Magnet pull force case 1 Magnetization direction icon
  • xltk-yel-neodymium-magnetic-thumbtack
    7/8 x 1 1/8 Inch Neodymium Rare Earth Magnetic Thumbtack N42 XLTK-YEL
    7.45 Magnet pull force case 1 Magnetization direction icon
  • rx4c2-neodymium-ring-magnet
    1 1/4 x 3/4 x 1/8 Inch Neodymium Rare Earth Ring Magnet N42 RX4C2
    12.6 Magnet pull force case 1 Magnetization direction icon
  • 55fm01-custom-neodymium-magnet
    Custom Neodymium Magnet 55FM01
  • d41ad-p-neodymium-adhesive-backed-disc-magnet
    1/4 x 1/16 Inch Neodymium Rare Earth 3M Adhesive Backed Disc Craft Magnet N42 D41AD-P
    1.19 Magnet pull force case 1 Magnetization direction icon
  • stc-neodymium-star-magnet
    3/4 x 1/8 Inch Neodymium Rare Earth Star Magnet N42 STC
    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
  • 546m00-custom-neodymium-magnet
    Custom Neodymium Magnet 546M00
  • bc66-neodymium-block-magnet
    3/4 x 3/8 x 3/8 Inch Neodymium Rare Earth Bar Magnet N42 BC66
    18.21 Magnet pull force case 1 Magnetization direction icon
  • d42dia-neodymium-diametric-disc-magnet
    1/4 x 1/8 Inch Neodymium Rare Earth Diametric Disc Magnet N42 D42DIA
    1.32 Magnet pull force case 1 Magnetization direction icon
  • d62-n52-neodymium-disc-magnet
    3/8 x 1/8 Inch Neodymium Rare Earth Disc Magnet N52 D62-N52
    5.46 Magnet pull force case 1 Magnetization direction icon
  • da8-neodymium-disc-magnet
    5/8 x 1/2 Inch Neodymium Rare Earth Disc Magnet N42 DA8
    22.6 Magnet pull force case 1 Magnetization direction icon
  • dx48-neodymium-disc-magnet
    1 1/4 x 1/2 Inch Neodymium Rare Earth Disc Magnet N42 DX48
    61.59 Magnet pull force case 1 Magnetization direction icon
  • d052-neodymium-disc-magnet
    0.156 x 1/8 Inch Neodymium Rare Earth Disc Magnet N42 D052
    1.02 Magnet pull force case 1 Magnetization direction icon
  • d21-neodymium-disc-magnet
    1/8 x 1/16 Inch Neodymium Rare Earth Disc Magnet N42 D21
    0.45 Magnet pull force case 1 Magnetization direction icon
  • rz0y0x0-neodymium-ring-magnet
    3 x 2 x 1 Inch Neodymium Rare Earth Ring Magnet N42 RZ0Y0X0
    253.3 Magnet pull force case 1 Magnetization direction icon
  • Our Services

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