|16 lb||6 kg||12 lb||5 kg||4 kg||3 kg||6 lb||2 kg|
|Age||M Open/ M30-M45||M50-M55/ Junior||HS boys/ young men/ Int. boys||M60-M65/ Youth||W Open/ M70-M75/ W30-W45/ HS girls/ Y women/ Int. girls/ Jr/ Youth||M80+/ W50-W70||Midget boys/Bantam boys/ Youth girls/ Midget girls/ Bantam girls||W75+/ sub-bantam boys/ sub-bantam girls|
|Imperial Weight||16.00 lb||13.23 lb||12.00 lb||11.02 lb||8.82 lb||6.61 lb||6.00 lb||4.41 lb|
|Metric Weight||7.26 kg||6.00 kg||5.44 kg||5.00 kg||4.00 kg||3.00 kg||2.72 kg||2.00 kg|
|Max Diameter||130 mm||130 mm||117.5 mm||130 mm||110 mm||110 mm||90 mm|
|Min Diameter||110 mm||105 mm||98.4 mm||100 mm||95 mm||85 mm||80 mm|
It can be difficult to track down official implement specifications when you don’t have a rule book in your hands. So I’m posting this more for my own reference, but I’m sure others will find it helpful as well.
Please note that there are no age groups in the USATF, IAAF, or NFHS that use an 8lb shot put. I still see quite a few of them turning up at indoor high school meets.