48 x 63 mm Neodymium Rare Earth Single Sided Fishing Magnet N38 FM1-48

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FM1-48 Specifications

Dimensions: This shows the name of each dimension and how it is measured in the image.
Magnetization Direction: The direction through which the magnet is magnetized. See our Magnetization Directions page for more details.
North (outer face)
Size: Size is the physical dimensions of the product using the standard unit of measure inches.

1.89 x 2.48 Inch ( Diameter x Thickness )
Metric Size: Metric size is the physical dimensions of the product in metric millimeters.

48 x 63 mm ( Diameter x Thickness )
Pull Force 1: Pull force case 1 represents a magnet attracting to a thick steel plate. Learn more about Magnet Pull Force Case 1.

230 lb (104.33 kg)
Grade:
Grade N

Min: -238°F (-150°C) Max: 176°F (80°C)

Hover over grades for temp info:

N

NM

NH

NSH

NUH

NEH

NAH
N38
Max Operating Temp: Maximum operating temperature, also known as maximum service temperature, is the temperature at which the magnet may be exposed to continuously with no significant long-range instability or structural changes. Learn more in our Temperature and Neodymium Magnets article.
176°F (80°C)
Material: This lists the name of the material each product is composed of.
Neodymium (NdFeb)
BH Max: BH max is the Maximum Energy Product at the point on the B/H Curve that has the most strength, expressed in MGOe (MegaGaussOersteds). When describing the grade of a neodymium magnet, this number is commonly referred to as the "N" number, as in Grade N52 magnets. Learn more about Bh max in our glossary.

38 MGOe
Tolerances: Dimensional tolerance specifies the allowed leeway for variations in manufacturing.
±0.01 in (.25mm)
Coating: Most neodymium magnets are plated or coated in order to protect the magnet material from corrosion. Check out our Custom Magnets for unplated magnets and other coatings not stocked for this size magnet. Learn more about all available platings and coating in our What Magnet Coating Should I Use? article.
Nickel-Copper-Nickel (Ni-Cu-Ni)
Weight: This is the weight of a single magnet in ounces and grams. Variety packs (with mixed sizes) show the overall weight.

13.6157 oz (386 g)
Br Max: Br max is also called "Residual Flux Density" and is when the magnetic induction remaining in a saturated magnetic material after the magnetizing field has been removed. This is the point at which the hysteresis loop crosses the B axis at zero magnetizing force, and represents the maximum flux output from the given magnet material. By definition, this point occurs at zero air gap, and therefore cannot be seen in practical use of magnet materials. Learn more about Br max in our glossary.

12,600 Gauss
Color: The color of the coating or plating on the product.

Silver

Product Description

The fm1-48 powerful neodymium fishing magnet has a 48mm diameter and 63mm thickness with a pull force of 230lb. The fishing magnet is magnetized through thickness with the north pole facing outward and steel cup the south pole or creating a super strong attraction to ferrous metal. Made from N38 grade material, this magnet has a high size to strength ratio and can lift large ferrous metal pieces.

The fm1-48 single-sided fishing magnet is a powerful retrieval magnet designed for pulling ferrous metal objects from rivers, lakes, wells, docks, and other hard-to-reach locations. Its strong magnetic face makes it ideal for magnet fishing, underwater recovery, retrieving lost tools and hardware, and searching for iron and steel objects hidden beneath the water. This heavy duty fishing magnet is a versatile choice for magnet fishing enthusiasts, hobbyists, treasure hunters, property owners, and anyone who needs a strong magnetic retrieval tool. It can also be used around workshops, garages, construction areas, and other locations for recovering ferrous metal objects from difficult to access spaces.

Common Applications

Magnet Fishing - Recreational magnet fishing and metal recovery.
Lakes, Rivers & Canals - Retrieving ferrous metal objects from lakes, rivers, ponds, and canals.
Dropped Tools & Equipment - Recovering dropped tools and equipment from water.
Docks, Piers & Bridges - Searching for lost metal objects from docks, piers, and bridges.
Wells & Drains - Retrieving steel objects from wells, drains, and other difficult-to-reach areas.
Waterway Cleanup - Recovering ferrous debris from waterways and submerged areas.
Mud & Sediment - Locating metal objects in mud, sediment, and shallow water.
Tanks & Utility Spaces - Retrieving dropped hardware from tanks, pits, and utility spaces.
Workshops & Industrial Areas - Recovering tools and parts from garages, workshops, and industrial areas.
Metal Debris Cleanup - Removing unwanted ferrous metal debris during cleanup projects.
Shoreline & Underwater Searching - Searching shorelines and underwater areas for magnetic objects.
Confined Space Retrieval - Performing magnetic retrieval in confined or inaccessible spaces.

Product Features

Steel Cup Construction - The magnet is housed in a steel cup that helps concentrate magnetic force and attracts strongly to ferrous metal.
Secure Rope Connection - Eyebolt mounting provides a convenient attachment point for pulling and retrieving magnetic objects.
Durable Design - Robust construction gives impact resistance and is suited for repeated lifting, dragging, and recovery applications.
Reusable Magnetic Retrieval - Can be repeatedly lowered, dragged, retrieved, and reused for finding ferrous objects.
Permanent Magnet - Remains magnetized without requiring electricity, batteries, or an external power source.
Rare Earth Neodymium Magnet - The strongest type of permanent magnet available, providing exceptional strength for its size.