Neodymium Rare Earth Rubber Magnetic Hanging Hook N38 WPH-SM

WPH-SM Specifications

• Magnetization Direction: The direction through which the magnet is magnetized. See our Magnetization Directions page for more details.
  Alternating north and south on steel disc
• Grade:

  Grade N

  Min: -238°F (-150°C) Max: 176°F (80°C)

  Hover over grades for temp info:

  • N
  • NM
  • NH
  • NSH
  • NUH
  • NEH
  • NAH
  N38
• Max Operating Temp: Maximum operating temperature, also known as maximum service temperature, is the temperature at which the magnet may be exposed to continuously with no significant long-range instability or structural changes. Learn more in our Temperature and Neodymium Magnets article.
  176°F (80°C)
• Material: This lists the name of the material each product is composed of.
  Neodymium (NdFeb)
• BH Max: BH max is the Maximum Energy Product at the point on the B/H Curve that has the most strength, expressed in MGOe (MegaGaussOersteds). When describing the grade of a neodymium magnet, this number is commonly referred to as the "N" number, as in Grade N52 magnets. Learn more about Bh max in our glossary.
  38 MGOe
• Weight: This is the weight of a single magnet in ounces and grams.
  1.947 oz (55.2 g)
• Br Max: Br max is also called "Residual Flux Density" and is when the magnetic induction remaining in a saturated magnetic material after the magnetizing field has been removed. This is the point at which the hysteresis loop crosses the B axis at zero magnetizing force, and represents the maximum flux output from the given magnet material. By definition, this point occurs at zero air gap, and therefore cannot be seen in practical use of magnet materials. Learn more about Br max in our glossary.
  12,600 Gauss
• Color: The color of the coating or plating on the product.
  Black
• Diameter:
  2 3/32"
• Height:
  1 3/4"
• Assembly:
  NdFeB disc magnets, steel and plastic housing

These waterproof plastic hooks are designed to hold a load to a vertical surface, and are great for locations that can get wet. Perfect for outdoor use. Their rotating hook hangs below the magnet assembly, allowing them to hang all sorts of things from vertical surfaces. Every hook contains six powerful neodymium magnets, making them an excellent option for hanging jackets, keys or even small bags from a filing cabinet, refrigerator or other steel surface.

How much weight can these handy hooks support? It depends, especially on what type of surface it is sticking to. As described in How Much Will a Magnet Hold, it depends very much on the friction between the two surfaces, which is difficult to predict. Here are the results from a few measurements we made: