For screw on of 3 uniaxial accelerometers of the article AIS 86C2/AIS 4620 we offer a 3D assembly block. Please see hereby our picture.

The advantage of this 3D assembly block is the possibility of  independent use of each sensor. You can use it uniaxial, bi-axial or triaxial sensor.  An additional advantage is the repair possibility of all sensors separately.