
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 | UC312-38 | |
| Obere dayameta | d | 2-3/8 n'arọ |
| Dayameta dị n'èzí | D | 5.1181 n'arọ |
| Obosara mgbanaka dị n'ime | B | 2.7953 nke |
| Anya ihu akụkụ/ebe etiti | s | 1.0236 n'arọ |
| Obosara mgbanaka mpụta | C | 1.4173 n'arọ |
| Anya site na ikpochi ngwaọrụ chere ihu n'okporo ụzọ agbụrụ | s1 | 1.772 n'arọ |
| Tọọ ịghasa | ds | 1/2-20UNF |
| Anya ịtọ skru | G | 0.472 n'arọ |
| Ebe dị anya nke OR ruo etiti nke mpaghara mmanu mmanu | F | 0.386 n'arọ |
| Ndekọ ibu dị ike | C | 49 kN |
| Ndekọ ibu kwụ ọtọ | C0 | 31.1 kN |
| Ibu ibu | 2,5 n'arọ | |