1.Manaʻo
ʻO ka ʻūmi hexagonal waho he mea hoʻohui metala, i ʻike ʻia hoʻi he ʻūmi hexagonal waho, kahi ʻūmi hexagonal waho a i ʻole kahi ʻūmi hexagonal waho.

2. Ka mālama ʻana i ka ʻili
I ke kaʻina hana ʻana o nā bolts, ʻo ka mālama ʻana i ka ʻili kekahi o nā loulou pono ʻole. Hiki iā ia ke hoʻokō i ka ʻili o ka bolt i kekahi mau koi a hoʻomaikaʻi i kona kūpaʻa i ka pala, ka ikaika a me ka nani.
Nui nā ʻano hana lapaʻau ʻili no nā bolts, ʻo nā mea maʻamau penei:
Ke hoʻoheheʻe ʻia ʻana: Hoʻokomo ʻia nā ʻūlū i loko o kahi hopena zinc, a ua uhi ʻia ka zinc ma luna o ka ʻili o nā ʻūlū papa ma ka papa ma o kahi hopena electrochemical, e hōʻoia ana iā lākou he pale i ka popo a kū i ka corrosion.
Ke galvanizing wela: Ma hope o ka hana ʻia ʻana o nā bolts, ua hoʻokomo ʻia lākou i loko o ka wai zinc hoʻoheheʻe ʻia, a ua hoʻokumu ʻia kahi papa zinc ma luna o ka ʻili ma o kahi hopena kemika e hoʻokō ai i ka anti-rust, corrosion-resistant a me nā hopena ʻē aʻe.
Ka mālama ʻeleʻele ʻana: Hoʻokumu ʻia kahi ʻili ʻeleʻele metala ʻeleʻele ma luna o ka ʻili o ka bolt ma o kahi hopena kemika e hoʻomaikaʻi i kona kūpaʻa ʻana i ka pala.
Lapaʻau Phosphating: E ​​hoʻomohu i ka ʻūlū i loko o ka hopena phosphating e hana i kahi ʻili phosphating ma luna o ka ʻili e hoʻomaikaʻi i kona kūpaʻa ʻana i ka pala.
Ka mālama ʻana i ka paʻakikī: Ma o ka mālama wela a i ʻole ka pīpī ʻana i ka ʻili, ua hana ʻia kahi papa o ka uhi me ka paʻakikī kiʻekiʻe ma luna o ka ʻili o ka bolt e hoʻomaikaʻi i kona ikaika a me ke kūpaʻa ʻana i ka ʻaʻahu.
ʻO nā mea i luna aʻe nei he mau ʻano hana lapaʻau ʻili bolt maʻamau. Pili nā ʻano hana lapaʻau like ʻole i nā hiʻohiʻona noi like ʻole a me nā koi. I ka wā e hana ai i ka lapaʻau ʻili bolt, pono e hoʻokō ʻia e like me nā kūlana a me nā kikoʻī e pili ana i mea e hōʻoia ai e hoʻokō nā bolts i mālama ʻia i nā koi hana kūpono.

3. Hana pae
ʻO ka lepili papa hana o ka bolt hexagonal waho he ʻelua ʻāpana o nā helu, kahi e hōʻike ana i ka waiwai ikaika tensile nominal a me ka lakio ikaika hua o ka mea bolt.
Eia kekahi laʻana, ʻo kahi bolt me ​​ka pae hana 4.6 ke ʻano:
a. ʻO ka ikaika tensile maʻamau o ka mea bolt hiki i ka 400MPa;
b. ʻO ka lakio yield-strength o ka mea bolt he 0.6;
c. ʻO ka ikaika hua nominal o ka mea bolt hiki i ka pae 400 × 0.6 = 240MPa
Hiki i nā ʻōwili ikaika kiʻekiʻe pae hana 10.9, ma hope o ka mālama ʻana i ka wela, ke hoʻokō:
a. ʻO ka ikaika tensile maʻamau o ka mea bolt hiki i 1000MPa;
b. ʻO ka ikaika hua o ka mea bolt hiki i 1000 × 0.9 = 900MPa.

4. ʻO ka ʻokoʻa ma waena o nā ʻōwili hexagonal waho maʻamau a me nā ʻōwili hexagonal waho ikaika kiʻekiʻe
Hiki ke hoʻohana hou ʻia nā ʻōwili hexagonal maʻamau, akā ʻaʻole hiki ke hoʻohana hou ʻia nā ʻōwili ikaika kiʻekiʻe.
ʻO ka maʻamau, hana ʻia nā ʻūmiʻi ikaika kiʻekiʻe me ke kila kila kiʻekiʻe Helu 45 (8.8s), 20MmTiB (10.9S), a he mau ʻūmiʻi prestressed. No nā ʻano friction, e hoʻohana i kahi wrench torque e hoʻopili i ka prestress i kuhikuhi ʻia, a no nā ʻano pressure-bearing, wehe i ke poʻo torx. Hana ʻia nā ʻūmiʻi maʻamau me ke kila maʻamau (Q235) a pono wale nō e hoʻopaʻa ʻia.
ʻO ka maʻamau, ʻo nā ʻūmiʻi maʻamau he papa 4.4, papa 4.8, papa 5.6 a me papa 8.8. ʻO nā ʻūmiʻi ikaika kiʻekiʻe he papa 8.8 a me papa 10.9, ʻo ka papa 10.9 ka mea maʻamau.
ʻAʻole pono ka nui o nā lua wili o nā wili maʻamau ma mua o nā wili ikaika kiʻekiʻe. ʻO ka ʻoiaʻiʻo, he liʻiliʻi nā lua wili maʻamau.