moment of a force, \(M\)

https://doi.org/10.1351/goldbook.M04005
About a point is the vector product of the radius vector from this point to a point on the line of action of the force and the force, \(M=r\times F\).
Sources:
Green Book,2nd ed., p. 12 (https://www.cintegrado.com.br/site/documentos/green_book_2ed.pdf)
ISO, 31-2 (http://www.iso.org/iso/catalogue_detail.htm?csnumber=3626)