This standard specifies the product classification and requirements for hand and machine cross-recessed screwdriver spindles. This standard applies to hand and machine cross-recessed screwdriver spindles (hereinafter referred to as "spindles").
QB/T 2564.3-2002 history
2012QB/T 2564.3-2012 Screwdrivers.Screwdriver blades for cross-recessed head screws
2002QB/T 2564.3-2002 Screwdrivers-Screwdriver blades for cross-recessed head screws