3/8" x 1.5" N42 Neodymium Cylinder Magnets – Strong Rare Earth Magnets
Quick Facts
| Attribute |
Value |
| Magnet Type |
Neodymium Rare Earth Cylinder Magnet |
| Grade |
N42 |
| Shape |
Cylinder |
| Diameter |
3/8" (9.53 mm) |
| Length |
1.5" (38.1 mm) |
| Pull Force |
Approximately 40 lbs* |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer |
| Magnetization |
Through Thickness (Axially Magnetized) |
| Br Max |
13,200 Gauss |
| Certification |
ISO Certified |
*Note: Actual pull force may vary depending on the application, contact surface, steel thickness, air gap, and mounting method. Long cylinder magnets may produce different holding forces depending on the available contact surface. Testing in your specific application is recommended.
Quick Answers
| Question |
Answer |
| How strong is this magnet? |
Approximately 40 lbs of pull force under ideal conditions. |
| What is this magnet made of? |
NdFeB (Neodymium-Iron-Boron) rare earth material. |
| Is this stronger than N35 magnets? |
Yes. N42 provides greater magnetic strength than N40, N38, and N35 magnets of the same size. |
| Can it be used outdoors? |
Yes, but additional sealing is recommended for long-term outdoor or marine environments. |
| What is it commonly used for? |
Embedded magnetic mounts, deep magnetic closures, woodworking, tool holders, positioning fixtures, engineering projects, and industrial assemblies. |
Product Overview
These 3/8" x 1.5" N42 Neodymium Cylinder Magnets are designed for applications that require a slim profile with extended magnetic reach. The 3/8-inch diameter provides concentrated magnetic contact, while the 1.5-inch length produces a deeper magnetic field and greater stability than shorter cylinder magnets. With approximately 40 pounds of pull force under ideal conditions, they are an excellent choice for embedded mounting, structural positioning, and precision alignment.
Manufactured from premium N42 grade NdFeB (Neodymium-Iron-Boron), these magnets offer significantly greater magnetic strength than N40, N38, and N35 grades while remaining easy to integrate into compact designs. They are ideal for hidden magnetic closures, woodworking projects, custom fixtures, product assemblies, workshop organization, and industrial applications requiring dependable holding power.
Each magnet features a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating, providing superior resistance to corrosion, scratches, and chipping compared to standard epoxy-only coatings. Manufactured in ISO-certified facilities, these magnets deliver consistent quality and reliable long-term performance.
What Is a Neodymium Cylinder Magnet?
A neodymium cylinder magnet is a permanent NdFeB (Neodymium-Iron-Boron) magnet manufactured from an alloy of neodymium, iron, and boron. Neodymium magnets are the strongest commercially available permanent magnets and are widely used in manufacturing, engineering, automation, robotics, scientific equipment, and consumer products.
This magnet is magnetized through its 1.5-inch length (axially magnetized), placing the north and south poles on the two flat circular ends. This orientation creates a concentrated magnetic field that provides excellent holding power and deep magnetic penetration, making cylinder magnets ideal for embedded mounting and precision positioning.
How Strong Is This Magnet?
This 3/8" x 1.5" N42 cylinder magnet delivers approximately 40 pounds of pull force under ideal laboratory conditions using a thick, clean steel surface.
Actual holding force depends on several factors, including:
- Surface material
- Steel thickness
- Contact area
- Air gap
- Mounting method
- Environmental conditions
Because of its long, narrow profile, holding performance may vary depending on how much of the magnet contacts the mating steel surface. Testing in your intended application is recommended.
Technical Specifications
| Specification |
Value |
| Magnet Type |
Neodymium Rare Earth Cylinder Magnet |
| Grade |
N42 |
| Shape |
Cylinder |
| Diameter |
3/8" (9.53 mm) |
| Length |
1.5" (38.1 mm) |
| Pull Force |
Approximately 40 lbs* |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel Triple Layer |
| Magnetization |
Through Thickness (Axially Magnetized) |
| Br Max |
13,200 Gauss |
| Certification |
ISO Certified |
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 |
Cylinder Magnet Size Comparison
| Size |
Typical Use |
| Small |
Sensors & electronics |
| Medium |
General holding |
| Long Cylinder (3/8" × 1.5") |
Embedded mounting, deep closures, precision alignment |
Applications by Industry
| Industry |
Common Uses |
| Manufacturing |
Fixtures & positioning jigs |
| Woodworking |
Hidden magnetic closures |
| Robotics |
Positioning and alignment |
| Industrial |
Tool holders & assemblies |
| Education |
STEM demonstrations |
| DIY |
Custom projects and workshop organization |
Common Questions About This Magnet
What is the pull force?
This magnet provides approximately 40 pounds of pull force under ideal testing conditions.
Is N42 stronger than N35 magnets?
Yes. N42 delivers significantly greater magnetic strength and holding power than N35 magnets of the same dimensions.
Can it rust?
The Nickel-Copper-Nickel triple-layer coating provides excellent corrosion resistance and offers better durability and chip resistance than standard epoxy-only coatings. If the coating becomes damaged, moisture exposure may eventually cause corrosion.
Can it be used outdoors?
Yes. However, additional sealing is recommended for prolonged outdoor exposure or marine environments.
What direction is it magnetized?
This magnet is axially magnetized through its 1.5-inch length, with the north and south poles located on the two flat ends.
Do you offer bulk discounts?
Yes. Contact Super Magnet Store for wholesale pricing and volume discounts on commercial, industrial, OEM, educational, and reseller orders.
Why Buy From Super Magnet Store?
- Premium NdFeB rare earth magnets
- ISO-certified quality
- High-performance N42 magnetic grade
- Durable Nickel-Copper-Nickel triple-layer coating
- Superior corrosion, crack, and chip resistance
- Consistent magnetic performance
- Precision manufacturing
- Competitive pricing
- Bulk discounts available
- Fast shipping
- Trusted by manufacturers, engineers, educators, and DIY professionals worldwide
