The SMMM-D-48 is a flat mounting magnet with a female threaded shaft permanently attached. If you need a magnet to attach to something threaded, this is what you need.
Dimensions:
D=48mm (1.89″)
d=8mm (0.31″) (M8 Coarse Female threaded stud)
H=24mm (0.94″)
h=11mm (0.43″)
M=12mm (0.47″)
Material: NdFeB, Grade N38
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Weight: 4.48 oz. (127 g)
Pull Force: 178.6 lbs
Surface Field: N/A
Brmax: 12,600 Gauss
BHmax: 38 MGOe