
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 | UCF312-38 | |
| Nrụpụta Mba. | UC312-38 | |
| Ebe obibi | F312 | |
| Obere dayameta | d | 2-3/8 n'arọ |
| Obosara ụlọ / dayameta | a | 7-11/16 nke |
| Ebe dị anya n'ịtinye oghere | e | 5-29/32 n'arọ |
| Ebe ịrị elu elu ka ibu center | i | 1-19/64 nke |
| Ogologo ụkwụ ụlọ / elu flange | g | 7/8 nke |
| Ogologo ụlọ | l | 2-7/32 n'arọ |
| Ntụnye oghere oghere | s | 29/32 nke |
| Ngụkọta elu site na mgbago elu | z | 3-5/64 nke anụ ọhịa |
| Obosara mgbanaka ime | B | 2.7953 nke |
| Anya ihu akụkụ/ebe etiti | n | 1.024 n'arọ |
| Nha Bolt | 3/4 | |
| Ibu ibu | 4,76 n'arọ | |