5,760 grains in troy weight or 7,000 grains in avoirdupois weight
[DOC] [TLE] avoirdupois weight | measurement system | Britannica.com [PAR] unit of avoirdupois weight, equal to 16 ounces, 7,000 grains, or 0.45359237 kg, and of troy and apothecaries' weight, equal to 12 ounces, 5,760 grains, or 0.3732417216 kg.