Hanyar Juyawa Tsakanin Ma'auni da Haɗaɗɗen Zaren Inci

Zare tsari ne mai karkace da ake amfani da shi don haɗa kusoshi da goro. A kasashe da yankuna daban-daban, Ana amfani da ma'aunin zaren daban-daban. Imperial da metric sune mafi yawan ma'auni guda biyu.
A cikin ma'auni na Burtaniya, Abubuwan da aka gama gama gari sune UNC da UNF. UNC ita ce taƙaitawar Unified National Coarse, wanda ke nufin dunkulewar dunƙulewar ƙasa; UNF ita ce taƙaitawar Unified National Fine, wanda ke nufin dunkulewar zaren lafiya na kasa. Misali, Uri 1/4-20 yana nufin haɗe-haɗen zaren ƙasa mai dunƙule tare da fitilar 20 TPI (zaren da ke cikin inch) da diamita na 1/4 inke.

Ana amfani da zaren haɗin tsarin inch ko'ina a cikin ƙasashen tsarin inch. Irin wannan zaren ya kasu kashi uku: m thread jerin UNC, Mafi kyawun UNF, karin lafiya jerin UNFF, da ƙayyadaddun filin wasan UN.

Hanyar yin alama: Diamita na zaren-yawan zaren kowane inch; Matsakaicin daidaiton lambar jerin jerin

Misali: M jerin hakori 3/8-16 UNC-2A

Kyakkyawan jerin hakori 3/8-24 Unif-2a

Karin lafiya jerin hakori 3/8-32 UNFF-2A

Kafaffen jerin filaye 3/8—20 UN—2A

Lambobin farko 3/8 yana wakiltar diamita na waje na zaren a inci. Don canzawa zuwa ma'aunin awo mm, ninka ta 25.4, wato, 3/8×25.4= 9.525mm; lambobi na biyu da na uku 16, 24, 32, kuma 20 sune Adadin hakora a kowace inch (adadin hakora a kan tsawon 25.4mm); lambobin rubutu bayan lamba ta uku, Uri, M, UNFF, KUMA, su ne jerin lambobin, da lambobi biyu na ƙarshe, 2A, su ne daidaito matakin.

An ƙayyade cikin ma'aunin zaren haɗin kai cewa girman ƙira na iya samun filaye daban-daban. Misali, 1/2 yana da 13 hakora, 16 hakora, 20 hakora, kuma 32 hakora. Ma'auni ya nuna cewa 13 hakora ne m hakora da 20 hakora lafiya hakora ne. 28 hakora ne ultra-lafiya hakora; 16 hakora da 32 teeth are both called constant pitch, which is no different from coarse teeth and fine teeth.