Dab tsi yog qhov txawv ntawm UNC, UNF, UNEF, UN thiab UNS hauv xov code?

Muaj qhov sib txawv ntawm cov hniav zoo nkauj, cov hniav kom muaj nuj nqis thiab daim ntawv thov ntawm cov xov ntxhib (UNC), xov zoo (UNF), xov ultra-fine (UNEF) thiab xov tshwj xeeb suab (UNS).

1. Kev kho hniav zoo

UNC sawv cev rau cov xov ntxhib ntawm Tebchaws Meskas cov xov xwm UN series (optional radius of external thread base). Cov xov ntxhib muaj cov hniav loj thiab ib lub suab loj.

UNF yog United Fine Thread. Cov hniav zoo muaj cov hniav zoo.

Cov xov sib koom ua ke ntawm UNEF superfine hniav series yog me dua li cov hniav zoo. Nws belongs rau Asmeskas tus qauv ANSI B1.1.

UNS tshwj xeeb xov yog ib qho kev sib koom ua ke ntawm cov xov tshwj xeeb. Cov xov tshwj xeeb kuj hu ua xov tshwj xeeb. Cov xov muaj cov duab tshwj xeeb, xws li sab nrauv contour thiab cov hniav zoo nkauj.

2, tus nqi ntawm cov hniav

UNC muaj cov hniav tsawg dua ib chav tsev ntev.

UNF ntau cov hniav ib chav tsev ntev.

UNEF muaj cov hniav ntau dua ib chav tsev ntev dua cov xov zoo.

UNS muaj cov hniav ntau tshaj plaws rau ib chav tsev ntev.

3. Daim ntawv thov

UNC kuj tseem siv rau kev sib txuas thiab fastening ntawm cov khoom siv tshuab. General xov txuas siv coarse xov.

UNF cov hniav zoo feem ntau yog siv qhov uas yuav tsum tau xoob. Cov xov zoo rau hauv ntau cov hniav, uas yog, tuaj yeem ua lub luag haujlwm hauv kev txo cov kua dej, yog li siv rau hauv kev xav tau kev sib khi lub sijhawm. Cov xov zoo kuj tuaj yeem ua lub luag haujlwm hauv kev kho kom zoo vim qhov zoo ntawm cov suab me me.

UNEF series yog tsim rau siv nrog nyias-walled hlab, nyias nyias, lub tes tsho luv luv los yog cov pob qij txha luv uas yuav tsum tau ntev thiab me me suab.

UNS muaj ntau yam ntawm txoj kab uas hla / suab sib txuas rau cov qauv tsim tshwj xeeb uas UNC, UNF, thiab UNEF series tsis tuaj yeem ua tau raws li. Tsis tu ncua pitch series yog siv rau cov khoom uas tau rov ua dua thiab disassembled ntau zaus los yog rau qhov chaw uas yooj yim rau rov xov.

UN xov yog lub tebchaws United States, Britain, Canada thiab lwm yam sib koom ua ke tsim los ntawm lub hauv paus ntawm nti loj xov txheem, hu ua unified thread.