Dimensions: 1/2″ dia. x 1/4″ thick
Tolerances: ±0.004″ x ±0.004″
Material: NdFeB, Grade N42
Plating/Coating: Plastic coated
Magnetization Direction: Axial (Poles on Flat Ends)
Weight: 0.198 oz. (5.61 g)
Pull Force, Case 1: 3.45 lbs
Pull Force, Case 2: 5.57 lbs
Surface Field: 3775 Gauss
Max Operating Temp: 176ºF (80ºC)
Brmax: 13,200 Gauss
BHmax: 42 MGOe
These great magnets are coated with a durable layer of plastic. The 1/2″ x 1/4″ dimensions are the finished dimensions of the plastic coating. These discs can be slammed together many times without damage. They won’t mark or scratch surfaces they come in contact with. They are also completely weatherproof.