2.5x5mm Rare Earth Rod Magnet

SKU: 44200-5

$0.27USD or lower Each

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Tight teaching budget? Use Indigo 2.5x5mm small but strong neodymium magnets to build custom DIY magnetic letter classroom sets for homeschooling, early education or preschool.

These magnets have the extra strength needed to work with thick foam magnetic letters. They're also good for wood or polymer clay jumbo letter tiles on cloth covered metal sheets if high contrast whiteboards are unavailable.

For even bigger savings, stencil letters & numbers on cardboard or thin plastic. Color code them as you please for vowels & consonants, capitals & lower case or numbers even & odd.

Then, simply draw lines between the letters & use scissors or razor blades to cut the squares out. Since these will be very light, you can attach our smaller, thinner 2.5x1mm Nd disc magnets or 3x1mm Nd discs magnets with a bit of glue & you're done at a fraction of the cost! No need for a dry erase board; any metal surface such as a galvanized steel sheet will work.

We have sold NdFeB magnets since 1996 and have offered N42 grade since 2003, the best value for strength vs cost then & now. Don't be fooled by claims of higher strength, N52, at lower cost:
"...(Indigo) N42 Neodymium magnets...the real deal…bought magnets on Amazon advertised as N52… another cheap Chinese fake". Read the complete review.

Details

Don't be fooled by claims of superstrong, N52 magnets which are better suited for non-contact applications. N42 is only slightly weaker & best bang for the buck. Indigo Nd magnets have guaranteed magnet to magnet size & performance tolerances fully supported with Certificates of Compliance, Hysteresis graphs & safety documentation.

Read what just a few of our customers have said in Google Reviews:

...(Indigo) N42 Neodymium magnets, they are the real deal…bought magnets on Amazon...advertised as N52… another cheap Chinese fake. …(Indigo) sells authentic, high quality stuff … Highly recommended...full review at: Tracy Myerson.

Been doing business with Indigo for many years...Neodymium magnets are superb in quality and price...tools, magnifiers, tweezers...all ...withstanding the test of time...full review at: Peter Maran.

Fantastic support and product. Beats Amazon price with real customer service...product was of the highest quality and exactly as described. Will buy other items from Indigo instruments.... full review at: Ron Bennett

 

In Kits
P/NDescriptionQTY
44200-PB2.5mm Nd magnet protoype bundle10
Specifications
Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 44200-5    Size: 2.5 × 5mm
Distance (mm): 0 0.1 1 10 100
Gauss 6402.9 5883.9 2338.3 28.2 0.0
Lb 0.51 0.43 0.08 0.00 0.00
Kg 0.23 0.20 0.04 0.00 0.00

 

Magnet Documentation

Drawing Compliance MSDS ROHS Graph
Magnet Technical Diagram Certificate of Compliance MSDS ROHS N42 -Graph


Specifications for Fully Sintered/Pressed Neodymium Magnets, N42 Grade

RemanentFlux Density (Br) 13,000G; 1300mT
Coercivity (bHc) 12.0 Oe; 955 A/m
Intrinsic Coercivity (jHc) 17.0 Oe; 1353 A/m
Max.Energy Product (BHMax) 42 MGO; 334 kJ/m3
Curie Temperature (Tc) 310oC
Working Temperature (Tw) 80oC
Temp.Coefficient (αB)r -0.12%/Co


Tolerances - Sintered Rare Earth Magnets

  Dimensions Tolerances

Size:
Unfinished Surfaces:
Dimensions perpendicular to pressing (die formed)

Inches mm Inches mm
0 to 0.125 0 to 3 +/- 0.006 +/- 0.15
0.126 to 0.625 3 to 16 +/- 0.012 +/- 0.30
0.626 to 0.875 16 to 22 +/- 0.018 +/- 0.45
0.876 and Up 22 and Up +/- 2.5% +/- 2.5%


American (Imperial)/Metric Conversion Table

Inch Decimal mm Rounded
1/32" 0.031 0.8 1
3/32" 0.094 2.4 2.5
5/32" 0.156 4.0 4
1/16" 0.063 1.6 1.5
3/16" 0.188 4.8 5
2/10" 0.200 5.1 5
1/8" 0.125 3.2 3.75
1/4" 0.250 6.4 7.5
5/16" 0.313 7.9 7.5
3/8" 0.375 9.5 10
13/32" 0.406 10.3 10
1/2" 0.500 12.7 12.5
9/16" 0.563 14.3 15
5/8" 0.625 15.9 15
11/16" 0.688 17.5 17.5
3/4" 0.750 19.1 20
13/16" 0.813 20.6 20
7/8" 0.875 22.2 22.5
15/16" 0.938 23.8 25


See what these customers had to say on Google (click on name for full review):

Tracy Myerson: ...purchased N42 Neodymium magnets, they are the real deal...had previously bought magnets on Amazon that were advertised as N52, they were just another cheap Chinese fake....

Ron Bennett: Fantastic support and product. Beats Amazon price with real customer service...product was of the highest quality and exactly as described.

Peter Maran: Their Neodymium magnets are superb in quality and price; ...tools, magnifiers, tweezers, and so on, all quality made...
 

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