Neodymium Block Magnets

Types of block magnets

A block magnet is a wide term that includes brick magnets, square magnets, rectangle magnets, cube magnets and bar magnets. The below pictures group these into 3 distinct categories.

• Block Magnets

  

  All block, cube, bar, brick, square and rectangle magnets in one category

• Bar Magnets

  

  Block magnets magnetized through length

• Cube Magnets

  

  Block magnets in perfect cube shape

Available coatings for block magnets

We provide the below nickel, black nickel, gold, rubber and plastic coatings for our block, cube and bar magnets. Our default coating is a 3-layer nickel-copper-nickel (Ni-Cu-Ni) to protect from moisture and corrosion, enhance durability and to give a nice smooth silver finish. Additional coatings such as epoxy and silver available. See custom neodymium block magnets for more details

• Nickel
• Black Nickel
• Gold
• Rubber
• Plastic

• Neodymium Magnet Coatings

  

  Learn which coating is best for your block magnets

• Custom Block Magnets

  

  Don't see the coating you need? Get a custom block magnet quote.

Technical information for block magnets

Get more detailed technical information and specifications for neodymium block magnets below on our specs page and product specific features, downloads, drawings, magnetic field data and stats on individual product pages.

• Strength grades - Available in strength grades: N35, N38, N40, N42, N45, N48, N50, N52.
• Heat grades - Available in heat grades: N, NM, NH, NSH, NUH, NEH, NAH.
• Sizes - Available from 1/32" or about 0.8mm, all the way up to 6" or about 150mm. We also have popular sizes like 1/4", 1/2", 3/4", 1", 2" with many sizes with countersunk holes. You can use our magnet finder tool and select metric sizes to find close equivalents to popular metric sizes like 5mm, 10mm, 25mm, 50mm diameters, hole size or thicknesses, etc.
• Tolerances - Dimensional tolerances for all block magnets are 0.004" or 0.1mm.
• Pull force - Testing for all block magnets pull forces was done with precision equipment in real world use situations. You can use our free Magnet Strength Calculator and listed pull force for each product as a reference point, but each use case may present a unique situation and pull force may vary.

• Neodymium Magnet Specs

  

  See specs for all neodymium magnets or check product page for block specific info

• Magnet Grades

  

  Learn more about block magnets in our comprehensive magnet grade blog article

• Temperature & Neodymium Magnets

  

  Learn how temperature affects neodymium magnets

Block magnet magnetization directions

We offer block magnets in through thickness, through width and through length magnetization directions. Most block magnets are through their thickness dimension and bar magnets are through the length dimension and resemble the traditional north and south pole magnets used in science experiments. Our products are listed in order of length, width, then thickness. Below are diagrams of three magnetic polarizations we provide.

• Through thickness polarization

  

• Through width polarization

  

• Through length polarization

  

Block magnet applications and uses

Block magnets are used in a wide variety of applications from industrial, recycling, electronics to DIY projects and every day use. Check out our applications categories, magnet uses page and blog to learn more about how neodymium block magnets are used.

• Block Magnet Applications

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  Magnets categorized by use case

• Neodymium Magnet Uses

  

  See different use cases for block, bar and cube magnets

• Magnet Blog

  

  Learn more about block magnets in information and DIY guides