Magcraft NSN0586 1/2-Inch by 1/7-Inch by 1/8-Inch Rare Earth Ring Magnets, 12-Count

by Magcraft

Product Description

From the Manufacturer

Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. These countersunk ring magnets are 0.500-Inch (12.7-mm) outside diameter, 0.150-Inch (3.8-mm) inside diameter and 0.125-Inch (3.2-mm) thick. They are magnetized through the thickness. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Their individual pull force is approximately 3-Pound. Maximum working temperature is 176-Degree Fahrenheit (80-Degree Celsius). Magnets may chip and crack if allowed to snap together.

Product Details

• Shipping Weight: 1.6 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000SJMVMI
• Item model number: NSN0586
• Average Customer Review: 4.6 out of 5 stars  See all reviews (20 customer reviews)
• Amazon Best Sellers Rank: #12,331 in Home Improvement (See Top 100 in Home Improvement)
  • #59 in Arts, Crafts & Sewing > Sewing > Fasteners
  • #71 in Industrial & Scientific > Fasteners

Customer Reviews

Most Helpful Customer Reviews

7 of 7 people found the following review helpful:

5.0 out of 5 stars Strong Magnets but brittle (beware), March 27, 2010

By 

Nick (San Francisco) - See all my reviews

Amazon Verified Purchase

This review is from: Magcraft NSN0586 1/2-Inch by 1/7-Inch by 1/8-Inch Rare Earth Ring Magnets, 12-Count (Tools & Home Improvement)

You can have weak (magnetically) and durable magnets or strong and brittle magnets. These are the latter of the two. To get an idea of how strong these magnets are, I was doing a little test with them. I put one of these small magnets (only half inch in diameter) on the table and held another one vertically above it. I kept lowering the magnet until it was about 3" above the one on the table when it jumped of the table and smashed into the upper one. After doing this twice, both magnets split in half from the stress. To compensate for their brittleness, you can coat the magnets in 2 part epoxy resin without losing much magnetism. Overall great magnets!

7 of 7 people found the following review helpful:

5.0 out of 5 stars These magnets are great, May 20, 2008

By 

DavidA (GA) - See all my reviews

Amazon Verified Purchase

This review is from: Magcraft NSN0586 1/2-Inch by 1/7-Inch by 1/8-Inch Rare Earth Ring Magnets, 12-Count (Tools & Home Improvement)

These magnets are much stronger than I thought they would be. Really nice. I like the countersunk feature which allows one to screw this magnet into a flat surface and maintain its flatness. I plan on using them to create a jig for setting joiner knives.

5 of 5 people found the following review helpful:

5.0 out of 5 stars Incredibly strong and small magnets, December 31, 2008

By 

J. B Kraft "lonestargazer" (Palestine, TX United States) - See all my reviews
(VINE VOICE)    (REAL NAME)   

This review is from: Magcraft NSN0586 1/2-Inch by 1/7-Inch by 1/8-Inch Rare Earth Ring Magnets, 12-Count (Tools & Home Improvement)

I bought these to attach a steel-housed shop light to the underside of a steel shelf without having to drill holes or attach screws.

These magnets are so powerful that when you attach them, you have to slide them around to get them off. Needless to say, they do a terrific job for which I purchased them, and can be removed or shifted as my needs change.

No doubt there is a lot of other "cool" things these can do for you. Keep them away from your computer, though.