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ACCESSORIES FOR AUTOMATIC SCREW MACHINES; NAMELY, CHUCK ASSEMBLIES, BRAKE ASSEMBLIES, AND PUMP PULLEY ASSEMBLIES; COMPONENTS OF SUCH ASSEMBLIES; MACHINE PARTS AND COMPONENTS ASSOCIATED WITH SUCH ASSEMBLIES, NAMELY ROLLS, PINS, SHANKS, SHAFTS, STUDS, SCREWS, NUTS, WASHERS AND SLEEVES; AND KITS CONSISTING PRIMARILY OF BURRING SPINDLE ROLLS AND PINS