Dunƙule :

A dunƙule ne mai irin fastener, a wasu hanyoyi kama wani aron kusa, yawanci Ya sanya daga karfe, da kuma halin da helical kunya, da aka sani a matsayin  namiji thread  (external thread). Dunƙule s ana amfani da su ƙulle kayan da digging a kuma wedging cikin wani abu a lokacin da ya juya, yayin da thread cuts GROOVES a lazimta abu da zai iya taimakawa wajen Pull lazimta kayan tare da kuma hana Pull-fita. Akwai da yawa sukurori ga wani iri-iri na kayan. wadanda fiye lazimta da sukurori hada itace, sheet karfe, da kuma roba.

A dunƙule za yawanci suna da wani  shugaban  a kan daya karshen cewa yana dauke da wani musamman kafa siffar da damar da shi da za a juya, ko  kore , da kayan aiki. Common kayayyakin aiki, don tuki sukurori hada screwdrivers da wrenches. The shugaban ne yawanci ya fi girma fiye da jikin dunƙule, da rike da dunƙule daga anã kõra zurfi fiye da tsawon da dunƙule da kuma samar da wani  hali surface. 

Itace dunƙule:

Farkon itace sukurori aka yi da hannu, tare da wani jerin fayiloli, chisels, da sauran sabon kayan aikin, kuma wadannan za a iya hange sauƙi da abin lura da sababbu jerawa da kuma siffar da zaren, kazalika da fayil alamomi sauran a kan shugaban dunƙule kuma a cikin yanki tsakanin zaren. Mutane da yawa na wadannan sukurori da wani m karshen, gaba daya rasa kaifi Tapered batu a kusan dukkan zamani itace sukurori. A ƙarshe, lathes aka yi amfani da kayayyakin itace sukurori, da farko patent ake rubuta a 1760 a Ingila. A lokacin 1850s swaging kayan aikin da aka ɓullo da su samar da wani mafi uniform da m thread. Sukurori sanya tare da wadannan kayan aikin da taso kwaruruka da kaifi, kuma m zaren. Wasu itace sukurori aka sanya da yankan mutu a farkon marigayi 1700s (yiwu ma kafin 1678 lokacin da littafin abun ciki da aka buga a farko sassa).

Da zarar dunƙule juya inji kasance a kowa yin amfani, mafi kasuwanci, akwai itace sukurori aka samar da wannan hanya. Wadannan yanke itace sukurori, kusan ana Tapered, kuma koda lokacin da Tapered shank ba shakka, za su iya a gane saboda zaren kada ka mĩƙar da diamita daga cikin shank. Irin wannan sukurori an mafi kyau shigar bayan hakowa wani matukin jirgi rami tare da Tapered rawar soja bit. Mafi yawan zamani itace sukurori, fãce ga waɗanda sanya na tagulla, an kafa a thread mirgina inji. Wadannan sukurori da akai diamita, zaren da ya fi girma diamita fiye da shank, kuma suna karfi saboda mirgina tsari ba a yanka da hatsi na karfe.

Duk wani umurni don Allah tuntube mu.