3x1mm Neodymium Disc Magnet

SKU: 43511

$0.17USD or lower Each

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Skilled at 3D printing & want to make wallet size magnetic mini-picture frames? These small 3x1mm Nd disc magnetics have a 110g holding force. Enough for narrow borders & limited cropping for maximum exposure of your favorite family photos. You only need 4 for your DIY magnet photo frames to fit fridges, filing or storage cabinets, dishwashers, dry erase boards or locker accessories.

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.
Out of Stock Until: 2024-11-01
Details Specs Reviews Related Products
Details
Check out our full range of N42 grade neodymium discs & rectangle magnets. Here is what just a few customers had to say on Google: (click on name for full review):

Tracy Myerson: ...purchased (Indigo) 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...

 

Specifications
Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 43511      Size:  3x1mm
Distance (mm): 0 0.1 1 10 100
Gauss 3661.0 3464.0 1619.0 12.5 0.0
Lb 0.24 0.21 0.05 0.00 0.00
Kg 0.11 0.10 0.02 0.00 0.00

 

Magnet Documentation
Drawing Compliance MSDS ROHS Graph
Magnet Technical Diagram Certificate of Compliance MSDS ROHS N42 Chart


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

 

Reviews (2)
2020-08-15
This is the third time I've ordered these magnets from Indigo Instruments. They are perfect for building miniatures, and they arrived very quickly in the mail (which is in itself remarkable considering the mail volumes right now!). When I use up these magnets, I will definitely be ordering more from here.
— Kevin
2018-05-02
I used these magnets for building models, their size and strength are great for small panel sections that need led lighting and access without gluing sections together. Shipping was fast and well packed. Magnets are the perfect size and exactly what I needed, for the price you can't beat it! I highly recommend buying from them! and I will be back for more in the future. Thanks .
— dockbay94
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