Neodymium Magnets N42 Grade 1.5" x 3/4" x 3/8" Thick NdFeB Block Magnet with 2 Countersunk Holes
Quick Facts
| Attribute |
Value |
| Magnet Type |
Neodymium Rare Earth Block Magnet with Countersunk Holes |
| Grade |
N42 |
| Shape |
Block |
| Length |
1.5" (38.1 mm) |
| Width |
3/4" (19.05 mm) |
| Height |
3/8" (0.375" / 9.53 mm) |
| Pull Force |
Over 50 lbs |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel (Ni-Cu-Ni) |
| Magnetization |
Through Thickness |
| Br Max |
13,200 Gauss |
| Certification |
ISO Certified |
Quick Answers
| Question |
Answer |
| How strong is this magnet? |
Over 50 lbs of pull force under ideal conditions. |
| Is N42 stronger than N35? |
Yes. N42 is stronger than N40, N38, and N35 grades. |
| What is this magnet made of? |
NdFeB (Neodymium-Iron-Boron) rare earth material. |
| Can this magnet rust? |
The Nickel-Copper-Nickel coating provides excellent corrosion resistance, but prolonged moisture exposure or coating damage may eventually lead to corrosion. |
| What is it commonly used for? |
Heavy-duty mounting, cabinetry, industrial fixtures, equipment mounting, automation systems, woodworking, and engineering projects. |
Product Overview
Neodymium magnets are the world's strongest commercially available permanent magnets. Super Magnet Store offers premium-quality N42 neodymium magnets manufactured to stringent quality standards using advanced production technology. These magnets provide exceptional holding power, dependable performance, and long-term durability for industrial, commercial, and engineering applications.
This N42 neodymium block magnet measures 1.5" x 3/4" x 3/8" and features two dual-sided countersunk mounting holes for secure installation. Each hole measures 0.29" x 0.155" with an 82-degree countersink and is designed for use with #6 flat head screws. The holes are spaced 3/4" center-to-center, providing excellent mounting stability for demanding applications.
With over 50 lbs of pull force, this magnet combines powerful magnetic strength with secure mechanical fastening. The Nickel-Copper-Nickel triple-layer coating provides superior corrosion resistance and long service life.
What Is a Neodymium Block Magnet?
A neodymium block magnet is a rectangular rare earth permanent magnet made from neodymium, iron, and boron (NdFeB). Block magnets provide strong holding force and a large contact surface area, making them ideal for industrial equipment, manufacturing fixtures, cabinetry, engineering projects, displays, robotics, and automation systems.
How Strong Is This Magnet?
This N42 neodymium countersunk block magnet generates over 50 lbs of pull force under ideal conditions. Actual holding strength depends on steel thickness, surface finish, air gaps, mounting configuration, and environmental conditions. With a Br Max rating of 13,200 Gauss, it delivers powerful magnetic performance in a versatile mounting design.
Technical Specifications
| Specification |
Value |
| Product Name |
N42 Neodymium Block Magnet with 2 Countersunk Holes |
| Material |
Neodymium Iron Boron (NdFeB) |
| Grade |
N42 |
| Shape |
Block |
| Length |
1.5" (38.1 mm) |
| Width |
3/4" (19.05 mm) |
| Thickness |
3/8" (0.375" / 9.53 mm) |
| Number of Holes |
2 |
| Hole Type |
Dual-Sided Countersunk |
| Countersunk Hole Size |
0.29" x 0.155" |
| Countersink Angle |
82 Degrees |
| Hole Spacing |
3/4" Center-to-Center |
| Compatible Screw |
#6 Flat Head Screw |
| Coating |
Nickel-Copper-Nickel Triple Layer |
| Magnetization Direction |
Through Thickness (3/8") |
| Pole Orientation |
On the 1.5" x 3/4" Faces |
| Pull Force |
Over 50 lbs |
| Br Max |
13,200 Gauss |
| Certification |
ISO Certified |
| Operating Temperature |
Up to 176°F (80°C) |
Note: Pull force is an estimate only and should be tested for your specific application.
Magnet Grade Comparison
| Grade |
Relative Strength |
Typical Applications |
| N35 |
Standard |
General purpose |
| N38 |
Moderate |
Consumer products |
| N40 |
High |
Industrial |
| N42 |
Higher |
Engineering |
| N52 |
Maximum |
High-performance |
Block Magnet Size Comparison
| Size |
Typical Applications |
| Small Blocks |
Electronics |
| Medium Blocks |
Fixtures & Closures |
| Large Blocks |
Industrial assemblies |
| Heavy-Duty Blocks |
Equipment mounting & automation |
Applications by Industry
| Industry |
Common Uses |
| Manufacturing |
Fixtures & tooling |
| Cabinetry |
Heavy-duty magnetic catches |
| Industrial Equipment |
Secure mounting systems |
| Engineering |
Product development |
| Automation |
Positioning systems |
| Robotics |
Motion systems |
| Woodworking |
Hidden mounting applications |
Common Questions About This Magnet
How much weight can this magnet hold?
This magnet provides over 50 lbs of pull force under ideal conditions. Actual holding capacity depends on the mounting surface, installation method, and application design.
Is N42 stronger than N35?
Yes. N42 magnets provide substantially greater magnetic energy and holding force than N35 magnets of the same dimensions.
What screws fit the countersunk holes?
The 0.29" x 0.155" 82-degree countersunk holes are designed for use with #6 flat head screws.
What is the hole spacing?
The two mounting holes are spaced 3/4 inch center-to-center.
Can this magnet be used outdoors?
The Nickel-Copper-Nickel coating provides corrosion resistance, but additional protection is recommended for prolonged outdoor exposure.
Can it rust?
The protective nickel coating helps resist corrosion; however, moisture exposure and coating damage can eventually result in rust.
What direction is it magnetized?
This magnet is magnetized through the 3/8-inch thickness, with the north and south poles located on the 1.5" x 3/4" faces.
Do you offer wholesale pricing?
Yes. Contact Super Magnet Store for competitive volume pricing and wholesale discounts on neodymium magnets.
Why Buy From Super Magnet Store?
-
Premium NdFeB rare earth magnets
-
Secure dual countersunk mounting design
-
Powerful 50 lb holding force
-
Consistent magnetic performance
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ISO-certified manufacturing
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Competitive pricing
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Wholesale discounts available
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Superior quality and performance guaranteed
