Manufacturing consistent N35 4x2mm magnets requires specialized precision tooling and process controls. Our diamond-cutting and grinding equipment maintains dimensional tolerances of ±0.1mm for both diameter and thickness, ensuring uniform size across production batches. The small size of these magnets demands exceptional process control during sintering to prevent warping and maintain the precise cylindrical geometry required for reliable performance in assembly applications.
Products
n35 4x2mm magnets
Our N35 4x2mm magnets are precision-engineered small disc magnets that deliver reliable magnetic performance in space-constrained applications. Measuring exactly 4mm in diameter and 2mm in thickness, these compact neodymium magnets provide an optimal balance of magnetic strength, dimensional precision, and cost-effectiveness for applications where physical size is a critical factor. Manufactured from grade N35 sintered NdFeB material with virgin raw materials and finished with a consistent nickel-copper-nickel triple-layer coating, these N35 4x2mm magnets offer consistent performance for small-scale mechanical, electronic, and creative applications.
Send Inquiry
Product Description
N35 4x2mm Neodymium Disc Magnets: Precision Small Magnets for Compact Applications
Standard Dimensions:
Diameter: 4.0mm (±0.1mm) × Thickness: 2.0mm (±0.1mm)
Typical Pull Force:
Approximately 0.55 kg (1.21 lbs) on steel plate
Precision Manufacturing for Small-Scale Magnets
Precision Dimensional Control
Batch Consistency & Quality
Despite their small size, our N35 4x2mm magnets maintain exceptional batch-to-batch consistency through rigorous process controls. We implement statistical process control (SPC) monitoring on critical dimensions and magnetic properties, with random sampling of each production lot to verify performance uniformity. Our 30-year manufacturing expertise in small magnet production ensures every batch of N35 4x2mm magnets meets the same high standards for magnetic performance and dimensional accuracy.
Uniform Protective Coating
Applying consistent protective coatings to small magnets presents unique challenges. Our automated electroplating lines ensure uniform Ni-Cu-Ni coating application (standard 12-15μm total thickness) even on the edges of these 4mm diameter magnets. The coating completely covers all surfaces, providing reliable corrosion protection while maintaining the precise dimensions of the N35 4x2mm magnets. Alternative coatings including zinc, epoxy, and gold are available for specific application requirements.
Primary Applications for 4x2mm Magnets
Electronics & Sensors
Reed switches, position sensors, small actuators, and electronic device assemblies requiring compact magnetic components.
Craft & Modeling
Scale models, DIY projects, hobby crafts, educational demonstrations, and small mechanical assemblies.
Medical Devices
Small medical instruments, dental equipment, wearable devices, and diagnostic equipment components.
Jewelry & Fashion
Magnetic clasps, closures, magnetic jewelry, and fashion accessories requiring discreet magnetic components.
Technical Specifications: N35 4x2mm Disc Magnets
The following table details the complete technical specifications for our standard N35 4x2mm magnets. Custom variations including different coatings, tolerances, and magnetization directions are available for OEM applications with minimum quantity requirements.
| Parameter | Specification | Standard Tolerance | Testing Method | Notes |
|---|---|---|---|---|
| Dimensions | Diameter: 4.0mm, Thickness: 2.0mm | ±0.1mm | Optical comparator | Cylindrical shape, sharp edges standard |
| Material Grade | N35 sintered NdFeB | N35 standard | Hysteresis graph | Virgin materials, no recycled content |
| Remanence (Br) | 1.17-1.21 T (11.7-12.1 kG) | Per N35 standard | Lake Shore magnetometer | Typical 1.19 T |
| Coercivity (Hcb) | ≥868 kA/m (≥10.9 kOe) | Minimum value | Hysteresis graph | Ensures good demag resistance |
| Max Energy Product | 33-36 MGOe | Per N35 range | Calculated from BH curve | Typical 35 MGOe |
| Coating | Ni-Cu-Ni triple layer | 12-15μm total | X-ray fluorescence | Alternative coatings available |
| Working Temperature | 80°C maximum | -40°C to +80°C | Temperature chamber | Higher grades available for elevated temp |
| Pull Force (on steel) | 0.50-0.60 kg | Minimum 0.50 kg | Digital force gauge | Approx. 1.1-1.3 lbs |
Packaging & Ordering Information
Due to their small size, N35 4x2mm magnets require specialized packaging to prevent loss and damage during handling and shipping. We offer multiple packaging options: standard bulk packaging in sealed plastic bags (100 pieces per bag), organized in compartmentalized boxes (typically 500 or 1000 pieces per box), or custom packaging tailored to your assembly line requirements. All packaging includes moisture barrier protection and clear labeling with grade, dimensions, quantity, and production lot number for full traceability.
REACH Compliant RoHS Compliant ISO 9001:2015 Precision Manufacturing Small Magnet Specialist CP65 Compliant
Minimum Order Quantities & Lead Times
Standard N35 4x2mm magnets are available with minimum order quantities as low as 1,000 pieces for standard specifications, with smaller trial quantities available for product evaluation and testing. Standard lead time for orders up to 100,000 pieces is 10-15 working days, with expedited production available for urgent requirements. We maintain safety stock of popular items to support quick-turnaround orders for established customers. Custom specifications including special coatings, tolerances, or magnetization patterns may require additional setup time and higher minimum quantities.
Request Samples or Quotation for N35 4x2mm Magnets
We offer free samples of our N35 4x2mm magnets for qualified business inquiries to evaluate quality, dimensions, and magnetic performance in your specific application. Our sales team provides prompt quotations based on your quantity requirements, delivery schedule, and any special specifications. For custom requirements or technical consultation on small magnet applications, our engineering team is available to provide expert guidance and recommendations.
Direct contact: WhatsApp/WeChat: +86-18226620303 | Email: zb25@magnets-world.com | Small magnet specialist available for consultation
Hot Tags: n35 4x2mm magnets
Related Category
Send Inquiry
Please feel free to give your inquiry in the form below. We will reply you in 24 hours.
