Hla caj npab clamps tuaj yeem muab faib ua cov caj npab ncaj thiab kaum hla caj npab raws li lawv lub hom phiaj. Yog tias muab faib los ntawm cov khoom siv, lawv tuaj yeem muab faib ua cov hlau hla caj npab, uas yog lub kaum sab xis hlau tsau kab rov tav rau saum cov ncej fais fab nrog cov plooj (porcelain vases) rau lawv los txhawb cov kab hluav taws xob overhead. Nws yog tsuas yog siv rau kev txhim kho insulators thiab xob laim conductors kom muaj kev nyab xeeb nyob deb raws li cov cai. Dav siv nyob rau hauv automotive kev lag luam thiab engineering machinery. Hauv kev lag luam xws li shipbuilding thiab tub yees machinery, tus nqi ntawm cross arm clamps kuj tsawg heev. Cov yam ntxwv ntawm cross arm clamps yog qhov tseem ceeb, tab sis lawv lub luag haujlwm tseem ceeb heev.