Dab tsi yog kev siv ntawm kev sib xyaw screws
We sometimes use combination screws in life, but do you know anything about combination screws? Maybe few people now understand the combination screw. If you don't want to know, you can read this news. Combination screw A combination screw refers to a combination of a screw with a spring washer and a flat washer after rubbing the teeth, combined and fastened together. The two-combination screw refers to a screw with only one spring washer or only one flat washer, or it can also be equipped with only one flower tooth. The national standard number of the combination screw is indicated by GB9074. The commonly used cross recessed small pan head three combination screw national standard is GB9074.8. This .8 refers to the small pan head. Also known as the head size of the pan head screw. Indicated by letters as PM. Professional combination screw manufacturers, the habitual display method is three-in-one PM. The commonly used cross recessed large pan head combination screw national standard is GB9074.4. Professional combination screw called large pan head. Or R head, or B head. That is to say, the head of this combination screw is larger and thicker than the head of the small pan head combination screw. There is also a commonly used external hexagon combination screw, which is a cross external hexagon combination screw. It is often called a socket hexagon combination screw. The national label is GB9074.13.
High-lub zog hexagon taub hau ntsia liaj qhov rooj sib xyaw ua ke rau cov qauv hlau, feem ntau yog siv hauv kev tsheb ciav hlau thiab kev loj choj, boiler steel qauv, cov nroj tsuag muaj, siab- nce pej xeem vaj tse, ntauwd thiab mast lug, hoisting machinery thiab lawv steel qauv yuav tsum tau siv kev sib txhuam- hom siab - lub zog bolt ua ke rau cov ntsia hlau. Nws yog tus cwj pwm los ntawm ib qho ntxiv dodecagon ntawm qhov kawg ntawm lub bolt, tseem hu ua bolt. Thaum txhim kho, yuav tsum tau siv ib lub tshuab hluav taws xob tshwj xeeb. Muaj ob lub qhov (socket) lub taub hau nce thiab nqis, ib qho yog teem rau ntawm lub cev hexagonal ntawm cov txiv ntseej, thiab lwm qhov yog teem rau ntawm lub cev decagon ntawm sab nrauv hexagon ntsia hlau. Thaum zawm, siv lub clockwise quab yuam rau cov txiv ntseej, thiab siv ib qho sib npaug counterclockwise quab yuam rau lub dodecagon lub cev ntawm lub ntsia liaj qhov rooj, thiaj li hais tias qhov kev sib txuas ntawm qhov kawg ntawm lub sab hexagon ntsia hlau thiab lub dodecagon lub cev yog raug torsional shearing kom txog thaum lub caj dab. txiav. Txog tam sim no, lub installation tiav lawm. Qhov torsion shear hom siab - lub zog sab nraud hexagon ntsia hlau yog ib qho - lub sijhawm siv cov ntsia hlau thiab feem ntau tsis tuaj yeem raug tshem tawm tom qab kev teeb tsa.
Qhov no yog kev taw qhia thiab kev siv cov ntsia hlau ua ke.
