Flangia esagonale 1/2"-13 grado 8 (G) chiusura superiore dadi zinco grosso giallo (scegli quantità)
Grade 8 (G) Prevailing Torque Flange Top Lock Nuts. These nuts will require a wrench to install! Finish: Zinc Yellow. These are not second quality fasteners that were previously rejected or rescued from a scrap yard.