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12.5x2.5mm Disc Magnets

SKU: 44204-2.5

$1.18USD or lower Each

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These 12.5x2.5mm neodymium disc magnets have a surface gauss of ~2000 for use in window & door sensor alarm systems.

We have sold NdFeB magnets since 1996 and N42 grade since 2003, the best value for strength & temperature vs cost. Don't be fooled by claims of higher strength, N52, at lower cost.

Read the complete Google Customer Review for: "...(Indigo) N42 Neodymium magnets...the real deal…bought magnets on Amazon advertised as N52… another cheap Chinese fake"

We also provide complete Documentation including MSDS & ROHS; see below.
Details Specs Docs Reviews Related Products
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

Magnet Characteristics

Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 44204-2.5      Size:  12.5 × 2.5mm
Distance (mm): 0 0.1 1 10 100
Gauss 2451.2 2429.4 2182.0 306.4 0.6
Lb 4.41 4.33 3.49 0.07 0.00
Kg 2.00 1.97 1.59 0.03 0.00

 

Click on N42 Magnet Specifications for a table that lists general characteristics such as coercivity & remanence.

Click on N42 Magnet Tolerances for a table that lists the range of variation in thickness, diameter, etc.

Click on American vs Metric to see a table with conversions & as well as rounded mm equivalents closest to inch sizes.
Documentation

Magnet Documentation
Drawing Compliance MSDS ROHS Graph REACH
Magnet Technical Diagram Certificate of Compliance MSDS ROHS N42 Graph REACH Document
Reviews (1)
2018-02-14
I will be ordering more of these. I am so happy we came across Indigo Instruments, the quality is top notch, as is the customer service.
— ScienceStores
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