Product Description
N42 Neodymium Disc Magnet 5/16" x 1/8" – Strong NdFeB Rare Earth Small Magnet (Updated January 2026)
If you're looking for a small strong neodymium magnet that packs impressive power into a tiny size, this N42 neodymium disc magnet (5/16" diameter × 1/8" thick) with reliable pull force is one of the best options available in 2026. These neodymium rare earth disc magnets are perfect for anyone needing tiny neodymium magnets for crafts, electronics, sensors, model making, and precision holding tasks.
Our Real-World Testing Experience At Magnet4Sale.com, our team has tested thousands of neodymium NdFeB magnets over the past 15+ years. In recent 2026 lab tests, this 5/16 x 1/8 neodymium disc consistently held ~2.0–2.2 LB on flat steel surfaces and maintained ~1.6–1.9 LB on slightly textured or painted surfaces (typical real-world drop-off is 10–20%). We've used this exact size in micro-robotics prototypes and jewelry closures, where it provided secure attachment without adding noticeable weight or bulk.
Technical Specifications
- Grade: N42 – excellent balance of strength & cost (20–30% stronger than N35)
- Remanence (Br): 12,800–13,200 Gauss (1.28–1.32 Tesla)
- Pull Force: ~2.2 LB (lab-tested on 1/2" thick steel; real-world varies by surface contact)
- Magnetization: Axially magnetized (poles on flat faces) – best for direct holding
- Coating: Triple-layer Ni+Cu+Ni (nickel-copper-nickel) – corrosion-resistant & shiny finish
- Tolerance: ±0.002" (including coating) – high precision
- Max Operating Temperature: 80°C (176°F) – demagnetization risk above Curie point (~310°C)
Why N42 Is the Perfect Grade for Small Neodymium Magnets in 2026 N42 provides an ideal balance: stronger than N35 (by 15–20%), more affordable than N50/N52, and widely available. In 2026, with N55 prototypes emerging for ultra-compact uses, N42 remains the most reliable and cost-effective choice for most precision applications (per IDTechEx market reports).
Real-World Applications
- Crafts & DIY — Jewelry closures, model building, bottle cap fridge magnets
- Electronics & Sensors — PCB holding, miniature assemblies, wearable tech
- Science & Education — Magnetic field experiments (safe for students)
- Industrial & Precision — Tool organization, secure fastenings in tight spaces
- Home & Office — Organizers, closures, cable management
Safety & Proper Handling Strong small neodymium magnets can chip or shatter if snapped together — always handle carefully. Keep away from pacemakers, electronics, and children. Avoid high heat (>80°C), humidity, or outdoor use without protection. Our 10-year magnetic strength warranty covers normal indoor use only.
Why Buy from Magnet4Sale?
- ISO 9001 certified quality
- 10-year warranty on magnetic strength
- Bulk discounts available
- Fast, reliable shipping
- Trusted by 5,000+ customers (4.8/5 average rating)
Order this N42 neodymium disc magnet today and experience the difference of premium small strong neodymium magnets! Bulk pricing available for hobbyists, makers, and professionals.
