Cov qib raug ntawm cov ntsiab lus tseem ceeb, feem ntau hu ua "threaded inserts" lossis "xov kho inserts," tuaj yeem sib txawv nyob ntawm cov chaw tsim khoom thiab cov ntawv thov tshwj xeeb. Txawm li cas los xij, zoo ib yam li lwm hom threaded inserts, key locking inserts feem ntau yog cais raws li cov qauv thoob ntiaj teb xws li ISO (International Organization for Standardization) lossis ANSI (American National Standards Institute).
Cov qib raug feem ntau rau cov qhov rooj xauv qhov tseem ceeb tuaj yeem suav nrog:
4H (H4) Chav Kawm:Qhov no yog qib high-precision haum raudaim ntaub ntawv qhov twg ob lub internal thiab sab nraud threads ntawm lub insert yuav tsum tau heev meej tolerances. Nws feem ntau siv rau hauv daim ntawv thov uas xav tau qib siab ntawm precision haum.
5H (H5) Chav Kawm:Me ntsis qis dua nyob rau hauv qhov tseeb piv rau 4H chav kawm, chav kawm 5H tseem muaj qhov raug siab thiab tsim nyog rau cov ntawv thov uas cov xov ntawm cov ntxig yuav tsum muaj qhov siab tshaj plaws tab sis tsis yog rau qhov ntawm 4H chav kawm.
6H (H6) Chav Kawm:Qhov no yog ib qho nruab nrab-precision theem tsim nyog rau ntau daim ntawv thov kev lag luam. Nws ua tau raws li qhov yuav tsum tau ua ntawm feem ntau cov tshuab sib txuas.
7H (H7) Chav Kawm:Me ntsis qis dua nyob rau hauv precision piv rau 6H chav kawm, 7H chav kawm yog tsim rau cov neeg kho tshuab kev sib txuas uas tsis muaj cov kev cai nruj nruj.
8H (H8) Chav Kawm:Qhov no yog qib qis-precision feem ntau siv rau hauv cov ntawv thov uas nruj kam rau ua kom haum tsis yog qhov tseem ceeb.
Raws li nrog ib qho threaded fastener los yog ntxig, qhov kev xaiv ntawm qhov raug theem rau qhov tseem ceeb locking inserts yuav tsum tau raws li cov kev cai tshwj xeeb ntawm daim ntawv thov, nrog rau tej yam xws li load-bearing peev, ib puag ncig tej yam kev mob, thiab los ua ke txoj kev. Nws yog ib qho tseem ceeb uas yuav tau sab laj nrog cov chaw tsim khoom cov kev qhia tshwj xeeb thiab cov qauv kom ntseeg tau tias qhov kev xaiv ntxig ua tau raws li qhov xav tau qhov tseeb.