7/8 x 1/4 Inch Neodymium Rare Earth Dual-Sided Countersunk Ring Magnets N42 (8 Pack)
7/8 x 1/4 Inch Neodymium Rare Earth Dual-Sided Countersunk Ring Magnets N42 (8 Pack)
| Quantity of Packs | Price per Pack | Discount |
|---|---|---|
| Buy 2 | $36.38/pack | 5% Off |
| Buy 3 | $34.47/pack | 10% Off |
| Buy 5 | $32.55/pack | 15% Off |
| Buy 10 | $30.64/pack | 20% Off |
| Buy 25 | $28.72/pack | 25% Off |
| Buy 50 | $26.81/pack | 30% Off |
| Buy 100 | $24.89/pack | 35% Off |
Magnet Specifications
| Imperial Size | 0.875 x 0.25 Inch (Outer Diameter x Thickness) |
|---|---|
| Metric Size | 22.225 x 6.35 mm (Outer Diameter x Thickness) |
| Countersunk Hole Size | 0.35 x 0.195 Inches at 82° |
| Countersunk Hole Location | Both Sides (Double Countersunk) |
| Screw Size | #8 |
| Material Grade | N42 |
| Pull Force | 19.8 lbs |
| Coating | Nickel-Copper-Nickel (Ni-Cu-Ni) |
| Magnetization Direction | Axially |
| Magnet Material | Sintered Neodymium (NdFeB) |
| Tolerance | +/- 0.004 Inches |
| Max Operating Temperature | 80°C / 176°F |
| Flux Density (Br) | 13,300 Gauss |
| Magnet Weight | 17.1 Grams |
| Part Number | DCS78X14N42-8PK |
| Quantity Included | 8 Countersunk Ring Magnets |
Produced in an ISO 9001 Facility
Manufactured to Meet RoHS & REACH Standards
Installing Countersunk Magnets: Snug, Not Tight
Tighten each screw only until its head sits flush with the magnet, then stop. Neodymium is hard but brittle, so it can't flex like a steel washer. Once the screw head seats, every extra turn wedges it deeper into the countersink and can crack the magnet around the hole.
Use #8 flat-head screws. Avoid pan-head and round-head screws, which press on the thin edge of the hole.
Drive the screw by hand when you can. If you use a drill/driver, set the clutch to a low number, drive slowly, stop about one turn early and finish by hand. Don't use an impact driver or drill mode. Mount the magnet on a flat surface over a pilot hole, because a bump or glue drip underneath can crack it as you tighten.
Learn more:
How Do I Install Countersunk Magnets Without Breaking Them?
Can I Use Metric and Imperial Screws Interchangeably With Countersunk Magnets?
- Magnet Safety Information
- RoHS/REACH Compliance
- 30 Day Return Policy
- Specification Sheet (PDF) (opens in a new tab)
- Technical Drawing (PDF) (opens in a new tab)
- 3D CAD Model (STEP)
Dimensions are nominal; see the drawing for tolerances. STEP files open in SolidWorks, Fusion, Onshape, FreeCAD and most other CAD software.
Cross-Reference Part Numbers: ND050-T
Other companies' part numbers that match this magnet's published grade, size, coating and features. Not affiliated or endorsed; please confirm fit for your application.
