SAE J531 qhov ntev square hexagon countersunk headless yeeb nkab muab tub lim plugs
SAE J531 qhov ntev qhov ntev hexagon sab nraud cov yeeb nkab lim dej ntws txhaws
SAE J2552 yog Barb-End Design push-on hose fittings, Barb duab thiab cov nab npawb ntawm cov khoom siv yog nyob ntawm lub khw, tab sis yuav tsum muaj yam tsawg kawg ntawm ob lub laij.
