Hei whakatau i te nati matau tika mō tō tono, me whai whakaaro koe ki ngā āhuatanga e whā: te momo nohoanga, te rahi o te miro, te teitei o te miro me te momo kume.
1. Momo Nohoanga
Ko te āhua o te nohoanga te wāhi e pā ana te nati wira ki te mata o te wira. E ai ki te kōrero i mua ake nei, ko ngā momo nohoanga tino noa he papatahi, he porowhita, he kōniko hoki. He mea tino noa te hoahoa nati wira kōniko 60 nekehanga. Ka āwhina te nohoanga kōniko ki te pokapū o te wira ina whakakīia ngā nati wira. Nō reira, he nui ake te tūponotanga ka whiwhi koe i ngā wāhanga taurite i tō nohoanga Mag, Shank rānei.
I tētahi atu taha, ko ngā nohoanga kōniko 45 nekehanga te mea e whakamahia nuitia ana mō ngā wira porowhita. Ina hoki, kaua rawa e whakamahia he nati raka 45 nekehanga ki tētahi wira OEM me te nohoanga kōniko 60 nekehanga.
2. Rahi Miro
Hei kimi i ngā miro nati lug e hiahiatia ana e koe mō tō waka, me whakatau e koe ngā ine o ngā miro. Hei whakatutuki i tēnei, me ine tuatahi te diameter o waho o te miro titi wira waka. He uaua ki te whiwhi ine tika mā te whakamahi i te rīpene ine anake. Engari, ka whakamahia he huinga calipers mamati hei whakatau i ngā ine o ngā miro. Ko ngā diameter miro tino noa mō ngā nati lug e whakamahi ana i ngā rahi SAE ko 7/16, 1/2, 9/16, me te 5/8 inihi.
3. Te Whakatakotoranga o te Miro
Hei whakatau i te piko, me tatau e koe te maha o ngā miro i te taha o te wāhanga kotahi inihi o te pou. Whakamahia he rīpene ine hei tapahi i te kotahi inihi o te rārangi, ā, tatau ā-ringa i te maha o ngā miro. Ko ngā piko tino noa mō ngā nati lug rahi SAE ko 7/16 "-20, 1/2" -20, 9/16 "-18, 5/8" -18, me te 5/8 "-11.
4. Momo Whakakī
Muri iho, me whakatau tātou i te momo kī. Ko ngā nati raka hexagon te mea tino noa, ā, he ngāwari te tāuta, te tango rānei i ngā ringaringa me ngā kī. Ahakoa he māmā ake tēnei mā tō mekanika o te rohe, mā te toa potae rānei, te tango i ō wira, ka ngāwari ake te tahaetia. Mena kei te āwangawanga koe mō te tahae, ka tūtohu mātou kia whakaarohia te hoko i tētahi huinga raka wira.

Me whakamahi ngā nati pūwero me ngā nati kī hex i ngā kī motuhake, i ngā taputapu rānei hei tāuta me te tango atu. Ka whakamahia ngā nati pūwero hei whakataurite i tētahi momo wira motuhake, hei whakarerekē rānei i te āhua whānui. Mēnā rānei, mō ngā take haumaru, ka taea e koe te whakamahi i tētahi nati pūwero mō ia wira - e mōhiotia whānuitia ana ko te raka wira.

Heoi, he maeneene ake te āhua o ngā nati kī hexagon, ā, he mea whakamahi noa i runga i ngā wira he iti ngā kōhao totohu kia pai ai te uru o te nati. Ko te painga matua o ēnei momo nati lug, kāore e pā kino ki te mata, nā te mea kāore e pā ki tētahi mata o waho ina tāutahia, ina tangohia rānei.