> > Rear axle nuts also were specified to be 217 ft-pounds (is that some exact metric amount?) 217 ft.lbf =3D 30 kg.m =3D 294 N.m Which shows that they use mass for their force unit (should be Newton). While the Imperial system uses force (lbf -> lbm) for their workaday mass unit (should be slug) R --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .