
Usoro nke UC na-ezo aka na ahaziri ahazi, ejiri ọtụtụ ebe Ohiri isi ngọngọ nkeji bọọlụ nwere aka nkwụnye aka. N'ime isi ha bụ bọọlụ nwere oghere dị omimi nke nwere a dayameta mpụta okirikiri (SPB) emebere ka ọ dabara n'ime oghere okirikiri dabara adaba nke ụlọ nkedo. Na-akwado metric akụkụ, A na-ahazi usoro isiokwu a maka ngwa mmepụta ihe na-achọ ikike ibu dị elu, nrụnye kwụ ọtọ, na arụmọrụ a pụrụ ịdabere na ya.
| ISO | UCF309-28 | |
| Nrụpụta Mba. | UC309-28 | |
| Ebe obibi | F309 | |
| Obere dayameta | d | 1-3/4 nke anụ ọhịa |
| Obosara ụlọ / dayameta | a | 6-5/16 nke |
| Ebe dị anya n'ịtinye oghere | e | 4-59/64 nke |
| Ebe ịrị elu elu ka ibu center | i | 63/64 nke |
| Ogologo ụkwụ ụlọ / elu flange | g | 23/32 nke |
| Ogologo ụlọ | l | 1-23/32 nke |
| Ntụnye oghere oghere | s | 3/4 nke anụ ọhịa |
| Ngụkọta elu site na mgbago elu | z | 2-23/64 nke |
| Obosara mgbanaka ime | B | 2.2441 n'arọ |
| Anya ihu akụkụ/ebe etiti | n | 0.866 n'arọ |
| Nha Bolt | 5/8 | |
| Ibu ibu | 2.21 n'arọ | |