Bar Rod magnets NdFeB, Deep Pot Holding, galvanized coated, steel body with threaded neck, Rod magnet NdFeB (Neodymium-Iron-Boron).
Magnet ID:              NDPTG-4050
Material: Circular rods made of NdFeB and steel body
Plating / Coating:  galvanized        
Shape:         Bar / Rod
Tolerance:           D ±0.1 mm / H ±0.2 mm
Magnetisation Direction:    anisotrop
Maximum Operation Temperature: 80 °C 
Delivery Time:           14-35 days
Article number         D mm                H mm            Thread MxL       Force* N         Weight g      Temperature °C
NDPTG-4050         40(+0.1/-0.1)     50(+0.2/-0.2)           M8x15               700                  490                    80        
Measurements:

Cup magnets are made from neodymium magnets, the world's strongest magnets. Neodymium cup magnets provide much stronger holding power than ceramic cup magnets.
This handy and useful neodymium cup magnet has a strong magnet embedded inside a Nickel coated steel cup to offer the maximum gripping power. The steel cup offers protection for the magnet and concentrates the magnetic force on the magnet surface.The magnetic cup has a countersunk center hole that is perfect for mounting with a flat head screw or bolt.