Neodymium Magnets N42 Grade 1" x 1/2" x 1/4" Thick Bar Magnet with 2 Countersunk Holes
Quick Facts
| Attribute |
Value |
| Magnet Type |
Neodymium Rare Earth Bar Magnet with Countersunk Holes |
| Grade |
N42 |
| Shape |
Bar / Block |
| Length |
1" (25.4 mm) |
| Width |
1/2" (12.7 mm) |
| Height |
1/4" (6.35 mm) |
| Pull Force |
Over 21 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 21 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 exposure to moisture or coating damage may eventually lead to corrosion. |
| What is it commonly used for? |
Cabinet doors, magnetic latches, woodworking fixtures, equipment mounting, displays, industrial assemblies, and automation systems. |
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 bar magnet measures 1" x 1/2" x 1/4" and features two dual-sided countersunk mounting holes. Each hole measures 0.25" x 0.125" with a 90-degree taper and is designed to work with #4 flat head screws. The holes are spaced 1/2" center-to-center, allowing for secure mounting and easy installation in a wide variety of applications.
With over 21 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 durability for long-term use.
What Is a Neodymium Bar Magnet?
A neodymium bar magnet is a rectangular rare earth permanent magnet made from neodymium, iron, and boron (NdFeB). Bar magnets provide exceptional magnetic strength and a large contact surface area, making them ideal for mounting, fixtures, cabinetry, displays, industrial equipment, automation systems, and engineering projects.
How Strong Is This Magnet?
This N42 neodymium countersunk bar magnet generates over 21 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 compact mounting design.
Technical Specifications
| Specification |
Value |
| Product Name |
N42 Neodymium Bar Magnet with 2 Countersunk Holes |
| Material |
Neodymium Iron Boron (NdFeB) |
| Grade |
N42 |
| Shape |
Bar / Block |
| Length |
1" (25.4 mm) |
| Width |
1/2" (12.7 mm) |
| Thickness |
1/4" (6.35 mm) |
| Number of Holes |
2 |
| Hole Type |
Dual-Sided Countersunk |
| Countersunk Hole Size |
0.25" x 0.125" |
| Countersink Angle |
90 Degrees |
| Hole Spacing |
1/2" Center-to-Center |
| Compatible Screw |
#4 Flat Head Screw |
| Coating |
Nickel-Copper-Nickel Triple Layer |
| Magnetization Direction |
Through Thickness (1/4") |
| Pole Orientation |
On the 1" x 1/2" Surfaces |
| Pull Force |
Over 21 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 Bars |
Electronics |
| Medium Bars |
Fixtures & Closures |
| Large Bars |
Industrial assemblies |
Applications by Industry
| Industry |
Common Uses |
| Cabinetry |
Magnetic catches & closures |
| Manufacturing |
Fixtures & tooling |
| Retail Displays |
Hidden mounting systems |
| Engineering |
Product development |
| Automation |
Positioning systems |
| Robotics |
Motion systems |
| DIY |
Custom mounting projects |
Common Questions About This Magnet
How much weight can this magnet hold?
This magnet provides over 21 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 0.25" x 0.125" 90-degree countersunk holes are designed for use with #4 flat head screws.
What is the hole spacing?
The two mounting holes are spaced 1/2 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.
What direction is it magnetized?
This magnet is magnetized through the 1/4-inch thickness, with the north and south poles located on the 1" x 1/2" surfaces.
Do you offer wholesale pricing?
Yes. Contact Super Magnet Store for competitive volume pricing and wholesale discounts on neodymium magnets.
Safety Notice
Strong neodymium magnets can pinch fingers, chip, crack, or shatter if allowed to collide with metal objects or other magnets. Keep away from children, pacemakers, sensitive electronics, and magnetic storage devices. Must read magnet safety information before purchase and use.
Why Buy From Super Magnet Store?
-
Premium NdFeB rare earth magnets
-
Secure dual countersunk mounting design
-
Consistent magnetic performance
-
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
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Reliable strength for industrial and engineering applications
