25x2.5mm Strong Nd Disk Magnet

SKU: 44209-2.5

$2.96USD or lower Each

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This 25x2.5mm (1x3/32") delivers a 10lb (4.5kg) holding force in a small space. Build your own wall mounted tool holder or organizer for safe & easy access to wrenches or knives.

Details

The Mark I Magnaprobe can respond to as little as 0.3 gauss & will detect weaknesses in magnetic shielding. The Mark II Magnaprobe is a fast & convenient way to confirm magnet are positioned with their poles pointing correctly.

Specifications
Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 44209-2.5      Size:  25 × 2.5mm
Distance (mm): 0 0.1 1 10 100
Gauss 1294.4 1291.2 1253.2 543.9 2.4
Lb 10.01 9.96 9.38 1.77 0.00
Kg 4.55 4.53 4.27 0.80 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


Here's what 3 happy customers said about us on our Google Page:


...I purchased N42 Neodymium magnets, they are the real deal. I had previously bought magnets on Amazon that were advertised as N52, they were just another cheap Chinese fake. These folks sell authentic, high quality stuff and get it to you fast....Read more of what Tracy Myerson had to say.

I've dealt with Indigo Instruments for years now....Most recently I sent them a hand-drawn sketch of my interpretation of something I saw on YouTube and wanted recommendations on what magnets to use. Chris called me up, discussed the project and made some recommendations. His recommendation was bang on....Read more of what Ian Kelly had to say.

Been doing business with Indigo for many years. Their Neodymium magnets are superb in quality and price....Read more of what Peter Maran had to say.
 
Reviews (2)
2021-08-01

It was ordered to test the theory that Covid-19 vaccines had made some people to be magnetized. The two I have checked have not proved to be so. The little magnets work very well. The only thing I would suggest is to be more explicit in warning about staying away from TV, computer, etc. with respect to actual distances recommended.

— Linda
— Indigo:

The danger to electronics is meant to be a general one. A tiny magnet up close will have no effect. A big one right up against a hard drive or monitor can cause some grief.

2017-09-07
Great product and very fast shipping! I was very happy with my order and will order from them again.
— Kelly S
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