
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 | UCHA207-20 | |
| Nrụpụta Mba. | UC207-20 | |
| Ụlọ Mba. | HA207 | |
| Obere dayameta | d | 1-1/4 nke anụ ọhịa |
| Ebe etiti oche okirikiri dị elu | h | 2-3/4 nke anụ ọhịa |
| Akụkụ | w | 4-9/16 nke |
| N'ozuzu ogologo | b | 3-5/8 n'arọ |
| Akụkụ | c | 0 |
| Elu nke mgbakwunye njedebe | a | 1-37/64 nke |
| Elu nke oghere mgbakwunye | s | G3/4 nke |
| Akụkụ | l | 3/4 nke anụ ọhịa |
| Obosara mgbanaka ime | B | 1.689 nke |
| Center of Bearing from Bearing End | n | 0.689 n'arọ |
| Ibu ibu | 1.22 n'arọ | |