
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 | UC308-25 | |
| Obere dayameta | d | 1-9/16 nke |
| Dayameta dị n'èzí | D | 3.5433 n'arọ |
| Obosara mgbanaka dị n'ime | B | 2.0472 n'arọ |
| Anya ihu akụkụ/ebe etiti | s | 0.748 n'arọ |
| Obosara mgbanaka mpụta | C | 1.063 n'arọ |
| Anya site na ikpochi ngwaọrụ chere ihu n'okporo ụzọ agbụrụ | s1 | 1.299 n'arọ |
| Tọọ ịghasa | ds | 3/8-24UNF |
| Anya ịtọ skru | G | 0.394 n'arọ |
| Ebe dị anya nke OR ruo etiti nke mpaghara mmanu mmanu | F | 7,8 mm |
| Ndekọ ibu dị ike | C | 29.2 kN |
| Ndekọ ibu kwụ ọtọ | C0 | 17.3 kN |
| Ibu ibu | 1,285 n'arọ | |