GB/T 5310 wani nau'i ne na bututun tukunyar jirgi.

Its wakilci abu ne 20g, 20mng, 25mng. Yana da matsakaicin ƙarfe na carbon tare da ƙarancin manganese.

Tsawon isar da bututun tukunyar jirgi ya kasu kashi biyu: ƙayyadaddun girman da girman girman ninki biyu. Ana ƙididdige farashin naúrar kowane bututu na gida bisa ga ƙayyadaddun tsayi, kuma ana ƙididdige farashin kowane bututu bisa ga ainihin nauyin.

Ana iya raba ma'auni biyu zuwa nau'i uku:

Shortan mulki: ana amfani da shi don gyara bututun ƙarfe na musamman a kan tallafi;

Daidaitaccen kauri na bango na musamman mai siffa mara nauyi (diamita na waje ƙasa da 32mm): ana amfani da shi don tsarin injiniya, kayan aikin hydraulic tare da daidaiton girman girma da ingantaccen farfajiyar madaidaicin bututun ƙarfe mara nauyi;

Non-misali sumul karfe bututu ( waje diamita mafi girma 32mm ko ciki diamita kasa da 40mm): An yi amfani da daban-daban tsarin sassa, kayan aiki da inji sassa.